Exercise guide
Exercise on its own takes off a few kilos, not a lot: about 2 to 3 kg on average, or about half a kilo for each extra 30 minutes a week. Eating less does most of the weight loss. What exercise does very well is trim the waist and the deep fat around the organs, help keep weight off, protect muscle while you lose weight, including on weight loss injections, and improve your health and fitness whatever the scales say.
The plan: build up to 150 to 300 minutes a week of brisk activity, strength training on 2 to 3 days, and more movement through the day. Start gently if you have a higher weight or sore joints. Check with your GP first if you have heart, kidney or metabolic disease such as diabetes, or get chest pain or unusual breathlessness when you exert yourself.
Expect about 2 to 3 kg on average from exercise alone: European obesity guidance tells clinicians to say exactly that, and an overview of 12 systematic reviews found losses of 1.5 to 3.5 kg. In 116 trials, each extra 30 minutes a week of aerobic exercise took off about 0.5 kg: 150 minutes a week took off about 2.8 kg, and 300 minutes about 4.2 kg. Adding exercise to a diet takes off about 1 to 1.7 kg more than the diet alone.
The body pushes back. On average, about 28% of the extra energy you burn is offset by a lower resting burn, and in a 24-week trial people who exercised ate about 90 to 125 calories a day more. A lot of exercise still works: supervised sessions burning 400 to 600 calories, 5 days a week for 10 months, took off about 4 to 5 kg.
It trims the waist, by about 3 cm on average, and the deep belly fat around the organs, even when the scales don't move. Being fit cuts much of the risk linked to a higher weight. And it matters most for keeping weight off: NICE says people who have lost weight may need 60 to 90 minutes of activity a day to avoid regaining it.
Both, for different jobs. For weight and fat, aerobic exercise such as brisk walking, cycling or rowing beats weights alone. Strength training on 2 to 3 days a week keeps muscle while you lose weight. Interval training (HIIT) and steady cardio lose about the same fat when they burn the same energy; HIIT just takes less time. The best exercise for weight loss is the one you will keep doing.
Yes, but not by exercising your belly. In 13 studies, training one part of the body did not reduce the fat over it: spot reduction is a myth. Whole-body exercise trims the waist, and so does eating less.
Keep exercising. On weight loss injections such as semaglutide (sold as Wegovy for weight loss and as Ozempic for diabetes) and tirzepatide (sold as Mounjaro), a quarter to two-fifths of the weight lost is lean tissue, not all of it muscle. Experts advise strength training at least 3 times a week plus 150 minutes of aerobic activity, but trials testing strength training alongside these medicines have not reported yet.
An overview of 12 systematic reviews found that exercise training on its own took off 1.5 to 3.5 kg, of which 1.3 to 2.6 kg was fat. The European Association for the Study of Obesity (EASO) recommends 150 to 200 minutes a week of at least moderate aerobic exercise for weight and fat loss, and tells clinicians to explain that the expected loss is on average no more than 2 to 3 kg, both at its top grade (A). The 2006 Cochrane review, now old, gave a range of 0.5 to 4 kg for exercise against no treatment.
A 2024 dose-response analysis of 116 trials and 6,880 people found that each extra 30 minutes a week of supervised aerobic exercise took off about 0.52 kg of weight and 0.56 cm from the waist. The relationship was roughly a straight line up to 300 minutes a week: about 2.8 kg at 150 minutes and 4.2 kg at 300. Waist and body fat changed by a clinically important amount from about 150 minutes a week.
The direction is clear; the exact sizes are less certain. The trials varied a lot, 54 of the 116 were at serious risk of bias, and only 2 lasted more than 48 weeks.
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Exercise plus diet lost about 1.1 kg more than diet alone, both in the Cochrane review (14 trials) and in 18 trials lasting 6 months or more. Combined diet and activity programmes beat diet alone by 1.7 kg at a year, and beat activity alone by about 6 kg at 12 to 18 months (8 trials, 1,022 people). Eating less does most of the work on the scales.
Some of the extra energy you burn is offset. In 1,754 adults, about 28% of the energy burned in activity was offset by a lower resting burn, more so in people with more body fat; this was a cross-sectional study, so cause and effect are unclear. In a 24-week trial of 198 adults, the exercise groups ate about 90 to 125 calories a day more, while resting metabolism and everyday movement did not change.
Bigger doses give less than the arithmetic predicts. In 411 postmenopausal women, weight loss matched prediction at 72 and 136 minutes a week, but at 194 minutes it was about half what was predicted, though the waist fell in every group. An analysis of exercise trials put the shortfall down mainly to low doses and eating a little more, and total daily energy use levels off at higher activity levels.
On average, exercise raises food intake by about 100 calories a day at most compared with not exercising. It may raise hunger before meals a little and improve fullness after them (EASO, grade B). Some people do compensate more than others, which is one reason to pair exercise with attention to eating.
In a trial of 141 young adults, supervised aerobic sessions burning 400 or 600 calories, 5 days a week for 10 months, took off 3.9 and 5.2 kg among those who completed it, against a gain of 0.5 kg in the control group, with similar results in men and women.
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Aerobic exercise reduced waist size by 3.2 cm on average across 25 trials with 1,686 people: by 4.2 cm with vigorous exercise and 2.5 cm with moderate. Across 117 studies, when weight did not change, exercise cut visceral fat (the deep fat around the organs) by 6.1% while diet cut it by 1.1%. In a 3-month trial of 52 men, exercise without weight loss still reduced abdominal and visceral fat, and in 40 trials visceral fat loss rose with the weekly energy burned.
In the Cochrane review, exercise alone lowered diastolic blood pressure by 2 mmHg, triglycerides by 0.2 mmol/L and fasting blood sugar by 0.2 mmol/L. The Canadian obesity guideline says 30 to 60 minutes of moderate to vigorous aerobic activity on most days reduces visceral fat and liver fat even without weight loss (its top grade).
In pooled data from 20 cohort studies (398,716 observations), fit people with obesity had no clearly higher risk of death than fit people of normal weight, while unfit people at any weight had 2 to 3 times the risk. These studies show a link, not proof, but they are a good reason to train for fitness whatever happens to your weight.
NICE suggests keeping your waist to less than half your height. For adults with a BMI under 35, a waist-to-height ratio of 0.5 to 0.59 means increased health risk, and 0.6 or more further increased risk. Measure your waist and your strength as well as your weight: in one trial the waist fell with exercise even where weight loss fell short of prediction.
In a meta-analysis of 13 studies with 1,158 people, training one part of the body did not reduce the fat over it. Six weeks of regular abdominal exercises did not reduce belly fat in 24 people, and in 11 people, training one leg took fat off the arms and trunk, not off that leg.
In 16 men, 57-minute sessions of abdominal work plus running removed about 0.7 kg more trunk fat than running alone over 10 weeks, with similar total fat loss. It is one small trial, the precision of the scan for a single region has been questioned, and nearly an hour of ab work 4 days a week is not a practical route.
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Whole-body aerobic exercise, more of it, and eating less. Aerobic exercise trims the waist by about 3.2 cm on average, and by about 0.56 cm for each extra 30 minutes a week. In postmenopausal women, 300 minutes a week for a year reduced total body fat by 1 percentage point more than 150 minutes, and more of the fat under the skin of the belly. Interval training also reduces abdominal and visceral fat. Ab exercises strengthen the muscles under the fat; they don't burn the fat over them.
In an 8-month trial of 119 adults, aerobic training took off more weight and fat than strength training, which added lean mass instead. Doing both took twice the time without extra fat loss. For the scales, aerobic exercise does more.
Strength training on its own reduces body fat a little in healthy adults: by about 1.5 percentage points of body fat and 0.55 kg of fat mass across 58 studies, with a small fall in visceral fat. Its main job while you lose weight is protecting muscle (see the injections and muscle section), which EASO recommends at its top grade. Most guidance asks for both kinds.
Interval training and steady moderate exercise reduce body fat about equally when they burn the same energy, and HIIT takes about 40% less time. One analysis found HIIT took off slightly more fat mass (1.58 kg against 1.13 kg within the groups) but not more body-fat percentage, a mixed finding. Choose the one you'll keep doing.
Higher-intensity exercise lost 1.5 kg more than lower-intensity exercise in 4 trials with 317 people, and vigorous aerobic exercise trimmed the waist more than moderate (4.2 against 2.5 cm).
EASO advises interval training for people living with obesity only after a heart risk assessment and with supervision (grade B). Our suggestion: build a base of steady activity first, start intervals once 150 minutes a week feels comfortable, and do them on a bike or rower rather than with jumps. With heart disease, diabetes or symptoms when you exert yourself, ask your GP first.
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During weight loss, strength training reduced the loss of lean mass by about 0.8 kg, and EASO recommends strength training at moderate to high intensity for this (grade A). In 160 older adults with obesity who were dieting, combined aerobic and strength training improved physical function most (by 21%, against 14%) and lost less lean mass (3%, against 5% with aerobic training alone) and less hip bone.
On tirzepatide, 160 people lost 21.3% of their body weight; about 74% of the loss was fat and 26% lean tissue, the same split as in the placebo group and in diet studies, including in people aged 65 and over. On semaglutide, a small substudy of 140 people, published only as a conference abstract, found about 38% of the weight lost was lean tissue.
Lean tissue is not all muscle: it includes water, organs and other tissue that isn't fat. MRI studies suggest muscle loss on these medicines is in line with the weight lost, and muscle quality may improve.
A 2025 joint advisory from four US lifestyle, nutrition and obesity societies says weight loss medicines should come with a structured exercise programme: strength training at least 3 times a week plus at least 150 minutes of moderate aerobic activity. It adds that protein alone will not preserve muscle without strength training. NICE says all weight loss medicines should be used alongside a reduced-calorie diet and more physical activity.
No published trial has yet tested strength training alongside semaglutide or tirzepatide. Trials are registered, such as LEAN-PREP with 232 adults, but its results are not expected before 2029. So the advice above is sensible expert opinion, not trial evidence with these medicines. One more reason to build the habit now: a year after stopping semaglutide and its lifestyle programme, people regained about two-thirds of the weight they had lost.
In a trial of 195 people who had lost weight on a diet, a year of exercise kept off 4.1 kg more than placebo, and exercise plus liraglutide, another weight loss medicine, 9.5 kg more. A year after treatment stopped, people who had exercised had regained 6 kg less than those who had taken liraglutide alone. Exercise plus liraglutide kept bone density, while liraglutide alone lowered hip and spine density compared with exercise alone.
Feeling sick, tiredness and dizziness are side effects. The NHS advises not driving or cycling until dizziness passes, and says low blood sugar is more likely if you also take other diabetes medicines. Our suggestion: eat something and have a drink before exercise, build up gently while side effects settle, and sit down if you feel light-headed.
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People in the US National Weight Control Registry, who have kept off a large weight loss, report about an hour of activity a day, but the amount varies widely: a quarter report burning under 1,000 calories a week in activity, and 35% over 3,000. Measured with activity monitors in 26 members, they did 41.5 minutes a day of sustained moderate to vigorous activity, against 19.2 in people with overweight. Members whose leisure-time activity fell over 10 years regained more.
The registry is self-selected and mostly self-reported, so it shows what successful people do, not what will work for everyone.
NICE says people who have lost weight may need 60 to 90 minutes of activity a day to avoid regaining it, and that 45 to 60 minutes a day may be needed to prevent obesity. This advice comes from NICE's 2006 guideline and was carried into its 2025 obesity guideline unchanged, so it is long-standing advice rather than new evidence. It means all activity, including walking, cycling to work and gardening, not gym time.
Trial evidence that exercise prevents regain is thinner than the registry suggests: one systematic review found no significant effect, and the American College of Sports Medicine (ACSM) found no well-designed trial. EASO's 200 to 300 minutes a week for keeping weight off is expert opinion. In an analysis done after a trial, women who kept off 10% or more at 2 years reported about 275 minutes of activity a week.
In a small study of 20 people, those with obesity sat for about 2 hours a day longer than lean people; moving as the lean people did could burn about 350 calories a day more. In 16 people who were overfed, most of the rise in daily energy use came from everyday movement outside exercise, and it predicted who gained least fat.
Walking programmes without diet changes took off about 1.3 kg over a median of 16 weeks, roughly 0.05 kg a week. People given pedometers added about 2,500 steps a day, and having a step goal predicted success. In cohort studies, more daily steps went with a lower risk of developing obesity, with over about 8,200 a day protective, and 7,000 steps against 2,000 went with a 47% lower risk of death and a 14% lower risk of type 2 diabetes.
There is no official step target for weight loss. NICE lists aiming for a number of steps each day as one way to build activity. Our suggestion: add about 2,000 to 2,500 steps a day to what you do now, the average gain in pedometer trials, working towards 7,000 to 8,000 or more.
Activity in bouts of any length is linked to better health. NHS Better Health suggests starting with as little as 10 minutes if that is where you are.
Doses name their guideline. Where we turn them into everyday terms, we say so. Moderate means you can talk but not sing; vigorous means you can say only a few words without pausing for breath.
WHO: 150 to 300 minutes of moderate activity a week, or 75 to 150 minutes of vigorous activity, strength work on 2 or more days, and less sitting. NICE asks clinicians to encourage this even if people do not lose weight.
EASO: 150 to 200 minutes a week of at least moderate aerobic exercise (grade A). ACSM: 150 to 250 minutes a week gives only modest weight loss; more than 250 minutes is linked to clinically significant loss. The Canadian guideline: 30 to 60 minutes on most days. In the dose-response analysis, each extra 30 minutes a week was worth about 0.5 kg.
NICE: 45 to 60 minutes of moderate activity a day, particularly if you don't reduce what you eat; the NHS says to get active for 45 to 60 minutes a day. ACSM: 150 to 250 minutes a week prevents weight gain. A US review found strong evidence that activity prevents weight gain, most clearly above 150 minutes a week.
NICE: 60 to 90 minutes of activity a day, which can include walking, cycling to work and gardening (advice from 2006, kept in 2025). EASO: 200 to 300 minutes a week, as expert opinion. ACSM: more than 250 minutes a week.
EASO recommends strength training at moderate to high intensity to keep muscle while losing weight (grade A), and the NHS asks for strength work on at least 2 days a week. Our translation: 2 to 3 sessions a week of 6 to 8 moves for the whole body, 2 to 3 sets of 8 to 15 reps, stopping each set with 2 to 3 reps in reserve.
Strength training at least 3 times a week plus at least 150 minutes of moderate aerobic activity (the 2025 joint advisory). This is consensus, not tested in trials with these medicines. The 7-day workout plan below has this shape.
WHO: some activity is better than none. Our suggestion: in week 1, a 10-minute walk on most days and two short strength sessions. Each week, add about 5 minutes to each walk until most days have 30 minutes. Then move to three strength sessions a week and longer or brisker walks. Short bouts count.
Our arithmetic: 150 minutes is 30 minutes on 5 days, and 300 minutes is about 45 minutes on most days. NICE's 60 to 90 minutes a day is all activity, not gym time: a brisk walk to work, a lunchtime walk and an evening session add up.
Stop exercising and call 999 for:
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Weight on its own is not one of the things ACSM uses to decide who needs a medical check before exercise. What counts is how active you are now, symptoms such as chest pain on exertion, known heart, kidney or metabolic disease such as diabetes, and how hard you plan to exercise. With any of those, get advice before you start, especially before vigorous exercise. The NHS also advises speaking to a GP first if you haven't exercised for some time or have a medical condition.
If you have had an eating disorder, or find yourself using exercise to earn food, talk to your GP, and set goals for health and strength rather than calories burned (our suggestion). NICE asks clinicians to check for eating disorders before suggesting restrictive approaches.
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Most days: the part that moves the scales and the waist. Brisk walking is moderate activity and the easiest habit to keep: start with 10 minutes on most days and build to 30 to 45 (our suggestion). The bike takes your weight on the saddle, so it is the first choice with sore knees or a very high weight: 20 to 40 minutes at talk-but-not-sing effort. Cross-trainer, 20 to 30 minutes (our suggestion); rowing, 3 rounds of 4 to 5 minutes at a conversational pace (its own page). Stairs make short brisk bursts inside the day: take the way down slowly, with the rail. Marching on the spot is the indoor option.
3D demoTreadmill walkingBeginner · Cardio machine
3D demoStationary cyclingBeginner · Cardio machine
3D demoElliptical TrainerIntermediate · Cardio machine
3D demoIndoor Rowing (Rowing Machine)Beginner · Cardio machine
3D demoStair climbingIntermediate · A step
3D demoStanding marchBeginner · No equipment2 to 3 days a week, the part that keeps muscle: 2 to 3 sets of 8 to 15 reps, stopping each set with 2 to 3 reps in reserve, and breathe out on each effort (our translation of EASO's moderate to high intensity). Sit-to-stands lead on to goblet squats, and wall push-ups to incline push-ups. With a higher body weight, use a sturdy chair, ideally with arms. If getting to the floor is hard, do bridges on a firm bed. For carries, start with a weight you can carry for 30 metres without your posture breaking, often lighter than the move's own page suggests (our suggestion).
3D demoSit to stand from a chairBeginner · A bench or box
3D demoDumbbell goblet squatIntermediate · A dumbbell
3D demoWall push-upBeginner · A wall
3D demoIncline push-upBeginner · A bench or box
3D demoBand rowBeginner · A band + An anchor point
3D demoChest-supported dumbbell rowBeginner · A dumbbell + A bench or box
3D demoDumbbell Romanian deadliftIntermediate · A dumbbell
3D demoStep-upBeginner · A step
3D demoGlute bridgeBeginner · No equipment
3D demoFarmer's carryBeginner · A dumbbell + A kettlebellIf you can't stand for long, have a very high weight, or have painful knees, hips or feet. Seated march, 1 to 2 minutes (its own page); sit-to-stands pushing on the thighs and seated curls, 5 to 10 reps (the chair workout's doses); seated knee straightening, 3 sets of 10 to 15 each leg (its own page); low step-ups, 6 to 10 each leg with a rail in reach, and calf raises, 10 to 15 holding a counter (our suggestion). Step jacks and punches raise the heart rate with no jumping: 30 to 45 seconds each in a circuit (our suggestion). These two are new and have no 3D demo yet, so follow the written steps.
3D demoSeated marchBeginner · A bench or box
3D demoSit to stand, pushing on the thighsBeginner · A bench or box
3D demoSeated knee extension (chair)Beginner · A bench or box + Something with weight
3D demoSeated dumbbell curlBeginner · A dumbbell + A bench or box
3D demoLow step-upBeginner · A step
3D demoSlow calf raiseBeginner · A wall
3D demoStep jack (low-impact jumping jack)Beginner · No equipment
3D demoStanding punches (shadow boxing)Beginner · No equipmentIn 142 older adults with knee arthritis, each kilo of weight lost reduced the load on the knee by about 4 kg per step. Water exercise gives small short-term improvements in pain and function in knee and hip arthritis, including in people with overweight or obesity. Aerobic exercise programmes cause about 2 more mild to moderate side effects per 100 people, mostly in muscles and joints. Start with seated work, a bike or water exercise, and build time before intensity (our suggestion).
Choose cycling, water exercise and walking on flat ground, and keep strength work for the thighs and hips. Our knee and hip arthritis guides have staged plans.
Leave burpees, jump squats and other jumping until walking and strength work feel comfortable; step jacks and marching raise the heart rate without the impact (our suggestion). EASO advises interval training for people living with obesity only after a heart risk assessment and with supervision.
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If getting down and up is hard, do floor moves on a firm bed, or swap them: sit-to-stands for bridges, for example (our suggestion).
Combine strength and aerobic training rather than aiming for weight loss alone: dieting costs muscle and hip bone, less so with strength training. NICE says to interpret BMI with caution in people over 65.
If you take insulin or a sulfonylurea such as gliclazide, exercise can bring on a hypo: our type 2 diabetes guide has the routine. Check your feet after exercise if you have diabetes, and never change a medicine yourself: talk to your diabetes team.
Breathable clothing, anti-chafe balm, supportive shoes and water to hand make sessions easier to repeat (our suggestion).
The low-impact cardio workout and the easy cardio workout give you your minutes; the beginner home workout is the place to start strength. The chair workout suits anyone who can't stand for long, at any age. The beginner home workout has a few floor moves: with a higher weight, do them on a firm bed or skip them at first. Keep the interval workout for when 150 minutes a week of steady activity feels comfortable.
A 25-minute standing cardio circuit with no jumping: marching, step jacks, sit-to-stands, punches, step-ups and wall push-ups, with a seated option for most moves.
25 minBeginner9 movesA bench or box, A stepA steady 30 to 45 minute cardio session at talk-but-not-sing pace: walk, cycle, row or cross-train, counting toward weekly activity guidelines.
40 minBeginner3 movesCardio machine, A wallA gentle 20-minute beginner home workout with a chair, a wall and a band: sit-to-stands, wall push-ups, band rows, step-ups and dead bugs.
20 minBeginner11 movesA bench or box, A wallA 20-minute seated workout for older adults who cannot stand for long: marching, leg and arm strength, posture, and sit-to-stands that lead back to standing.
20 minBeginner11 movesA bench or box, Something with weightA gentle leg strength routine with no jumping: sit-to-stands, step-ups, wall sits, bridges and calf raises.
20 minBeginner7 movesA bench or box, A stepA full-body resistance band workout: squats, presses, pull-aparts, band walks, good mornings and flyes.
25 minBeginner7 movesA bandA 35-minute full-body strength workout with dumbbells: goblet squats, presses, rows, Romanian deadlifts and carries.
35 minIntermediate9 movesA band, A dumbbellStrength and balance in one session: squats, Romanian deadlifts, push-ups, rows, step-ups, back extensions, carries and single-leg balance.
45 minBeginner14 movesA wall, A dumbbellA 25-minute interval session on a bike or rower: one-minute hard efforts with two minutes easy, building from 4 to 8 rounds.
25 minIntermediate1 movesCardio machineThe beginner plan is the best start: two, then three short strength sessions a week plus walks that build from 10 to 30 minutes. The 3-day home plan is the next step. On weight loss injections, the 7-day plan matches the experts' advice: three strength days and about 150 minutes of cardio. The 2-day plan is the minimum strength dose. The men's plan includes kettlebell swings and intervals, so it suits people already used to regular exercise.
Your first four weeks: two, then three short strength sessions a week at home plus walks, building gently to a full routine.
2 training days20 minBeginner3 days a weekThree full-body home workouts a week with dumbbells or no equipment at all, plus walks and an 8-week plan to keep progressing.
3 training days35 minBeginner7 days a weekA full week that mixes intensities: three strength days, two cardio days, a mobility day and an easy day, never seven hard days.
3 training days45 minBeginner2 days a weekTwo full-body strength sessions a week: the minimum that meets health guidelines, with every set, rep and rest, and an 8-week progression.
2 training days45 minBeginner3 days a weekA weekly plan for women over 50: strength, bone-loading and balance on 3 days plus walking, built on UK osteoporosis consensus advice.
3 training days45 minBeginner3 days a weekA 3-day strength plan for men over 40 with power and bone work, two cardio days and mobility, built on research on ageing muscle.
3 training days45 minBeginnerThey strengthen the muscles under the fat; they don't burn the fat over them. A meta-analysis of 13 studies found no local fat loss from training one area, six weeks of regular ab exercises did not shift belly fat, and training one leg took fat off the arms and trunk instead. One small trial found a little extra trunk fat loss with nearly an hour of ab work 4 days a week, which is not a practical route. Whole-body exercise and eating less reduce the waist.
Easy exercise burns a larger share of fat while you do it, but what matters for fat loss is the total energy burned. Steady and interval training lose about the same fat when they burn the same energy, and vigorous aerobic exercise trims the waist slightly more than moderate.
The afterburn is 6 to 15% of the session's own energy cost, and a review calls its role in weight loss generally unfounded. HIIT's real advantage is time.
A kilo of muscle burns about 13 calories a day at rest, against about 4.5 for a kilo of fat. Strength training matters for keeping muscle and function while you lose weight, not because muscle burns many calories at rest.
In a 4-week trial of 20 women on the same calorie deficit, fasted and fed cardio gave the same fat loss.
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On average, exercise raises food intake a little, about 100 calories a day or less, and does not cancel itself out. Some people do compensate more, which is one reason to pair exercise with attention to eating.
There is no guideline step target for weight loss. In cohort data, the biggest drop in the risk of death comes by about 5,000 to 7,000 steps a day, and more steps keep helping for some outcomes.
NICE says weight loss medicines should be used alongside a reduced-calorie diet and more physical activity. Exercise helps protect muscle and bone, and in one trial people who had exercised regained much less after treatment stopped.
Only with a very large amount: supervised sessions burning 400 to 600 calories, 5 days a week for 10 months, took off 4 to 5 kg. For most people, eating less does most of the weight loss, and exercise does most of the keeping it off and the health gains. As NHS Better Health puts it, changing what you eat can help you lose weight, and moving more can help you keep it off.
The one you will keep doing, done often. For weight and fat, aerobic exercise such as brisk walking, cycling, swimming or rowing works better than weights alone. Strength training on 2 to 3 days a week keeps muscle while you lose weight. Interval training saves time but loses about the same fat as steady exercise that burns the same energy. The best plan combines both kinds, with eating less doing most of the weight loss.
For a noticeable effect from exercise alone, at least 150 minutes a week of brisk activity, and more is better: in 116 trials, 150 minutes a week took off about 2.8 kg and 300 minutes about 4.2 kg. European guidance advises 150 to 200 minutes a week and says to expect 2 to 3 kg. The NHS suggests getting active for 45 to 60 minutes a day while losing weight. To keep weight off after losing it, NICE says you may need 60 to 90 minutes of activity a day, which includes all your walking and everyday activity.
Some, but usually not much: 2 to 3 kg on average. The body makes up for some of the extra energy you burn, through appetite and a slightly lower resting burn. Very large amounts of supervised exercise took off 4 to 5 kg in one trial. Diet and exercise together work best at a year and beyond.
Cardio for weight and fat: aerobic training took off more weight and fat than weights in a direct comparison. Weights for keeping and building muscle, which matters more the more weight you lose. Doing both took twice the time without extra fat loss in that trial, but most guidance still recommends both for health.
About the same, when the energy burned is the same. HIIT takes about 40% less time and may take off slightly more fat mass. It is harder and carries more strain, so European guidance advises it for people living with obesity only after a heart risk check and with supervision. Build a base of steady activity first.
Yes, but not by exercising your belly. Aerobic exercise reduces the waist by about 3 cm on average, more with vigorous effort, and reduces the deep fat around the organs even without weight loss. Ab exercises do not burn the fat over the abs. NICE suggests keeping your waist to less than half your height.
There is no official number. Walking programmes on their own take weight off slowly, about 0.05 kg a week. Adding around 2,000 to 2,500 steps a day to what you already do is a realistic start, and 7,000 to 8,000 or more is linked with a lower risk of disease and death. NICE lists a daily step goal as one way to build up activity.
Common reasons: exercise burns less than most people expect, appetite rises a little to match, and the body trims its resting burn slightly. You may also be losing fat from your waist while the scales stay still, so measure your waist as well. Exercise still lowers health risks without weight loss. If weight is the goal, combine exercise with eating less, and ask your GP about weight management support.
Yes, exercise. NICE says weight loss medicines should be used alongside a reduced-calorie diet and more physical activity. Part of the weight lost is lean tissue: about a quarter on tirzepatide and closer to two-fifths on semaglutide in a small substudy. Lean tissue includes water and organs, not just muscle. Experts advise strength training at least 3 times a week plus 150 minutes of moderate aerobic activity, though trials testing it with these medicines have not reported yet. Eat and drink before exercise, build up gently while side effects settle, and sit down if you feel dizzy; low blood sugar is more likely if you also take diabetes medicines.
For most people, yes. Weight on its own is not one of the things the American College of Sports Medicine uses to decide who needs a check before exercising; known heart, kidney or metabolic disease such as diabetes, symptoms such as chest pain on exertion, how active you are now and how hard you plan to exercise are. The NHS advises speaking to your GP first if you haven't exercised for some time or have a medical condition. Start with seated exercise, a bike or water, and build up slowly: cycling, water exercise, rowing, the cross-trainer and walking on flat ground are easiest on the joints. Stop and call 999 for chest pain that feels tight or spreads to the arm, neck or jaw.
Exercise education, not a diagnosis or treatment plan, and clinical review of these guides is pending. Stop and get advice for chest pain, unusual breathlessness, dizziness or fainting, or new pain, and check with your doctor or midwife first if they have told you to limit activity. Health disclaimer.
