Training guide
Strength training makes you stronger and builds muscle at any age, and it helps balance, walking and everyday tasks. In trials with more than 38,000 people it did not raise the risk of serious harm. The guidelines ask for strength work for all your major muscles on at least 2 days a week, plus about 150 minutes of brisk activity, and any strength work is better than none.
The principles behind a good plan are few: do enough hard sets, stop a couple of reps short of failure, add reps or weight over time, rest long enough to keep your reps up, and keep going for months. This page grades each principle by the evidence, shows how to start, and links to a guide for each question and to weekly plans that put it all together. Check with a GP first if you have a heart condition, or get chest pain, dizziness or breathlessness when you are active.
Compared with not training, it builds strength, muscle, power, balance, walking speed and the ability to do everyday tasks. That is the finding of an American College of Sports Medicine (ACSM) review of 137 reviews covering more than 30,000 people, which also found that training did not raise the risk of serious harm.
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Strength work for all your major muscles (legs, hips, back, tummy, chest, shoulders and arms) on at least 2 days a week, plus 150 minutes of moderate activity such as brisk walking. The World Health Organization (WHO) says some activity is better than none, and the UK Chief Medical Officers say any strength work is better than none.
Do enough hard sets. Stop 2 or 3 reps short of failure. Add reps or weight over time. Rest long enough to repeat your reps. Train each muscle about twice a week, or spread the sets however suits you. Recover with sleep, protein and enough food. Keep going.
Machines or free weights, fast or slow reps, fancy periodisation schemes, and full-body or split routines all gave similar results in pooled trials. Pick the version you will keep doing.
In 14,690 gym members training once a week, strength rose by about 30 to 50% in the first year. The ACSM now says fitting training to the person matters more than following set rules.
Start small and build up: health guidelines say some activity is better than none. A sensible first month, as in our beginner plans (our editorial starting point):
Each move has a rep range, such as 8 to 12. Keep the weight the same and add reps until every set reaches the top of the range, then add the smallest weight step and start again at the bottom. This is called double progression, and both halves of it work: adding reps built about as much muscle and strength as adding weight in trials.
Bands, bodyweight and home training all improve strength, and machines and free weights give similar results. A gym is a convenience, not a requirement.
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Most people don't. WHO says medical clearance is generally unnecessary before light or moderate activity if you have no reason to avoid it. The NHS advises speaking to a GP first if you haven't exercised for some time, or have medical conditions or concerns. Check with a GP before hard training if you have a heart condition, or get chest pain, dizziness or breathlessness when you are active.
One guide for each question about how to train, from sets and reps to rest days, each graded by the evidence.
Progressive overload explained: add reps, then weight, with double progression. What the trials show, how much to add, bodyweight options and plateaus.
Sets and repsHow many sets per muscle a week, which rep range builds muscle or strength, and whether to train to failure: what the meta-analyses show, in plain English.
Rest between setsHow long to rest between sets: about 1 to 2 minutes for most sets and 2 to 3 for heavy lifts. What the trials show, and how supersets save time safely.
How often to work outHow many days a week to work out and how often to train each muscle: the guidelines, minimum doses, full body vs split, and free plans for 2 to 7 days.
How to build muscleHow to build muscle: the training dose, how much protein (about 1.6 g per kg), sleep, eating enough, and how long it really takes at any age, with plans.
Zone 2 cardioWhat zone 2 really means, how to find yours with the talk test, why heart rate formulas mislead, and what trials show about fat burning and mitochondria.
HIITWhat HIIT does for fitness, fat loss and your heart compared with steady cardio, how often to do it, who should check first, and the afterburn sized honestly.
Warming upHow to warm up before a workout, with the evidence: what a warm-up does, static vs dynamic stretching, warm-up sets, injury-prevention warm-ups and cool-downs.
Muscle sorenessSore after a workout? What DOMS is, how long it lasts, what eases it and what doesn't, training while sore, and the signs that soreness is something serious.
Rest daysHow many rest days you need, what active recovery and deload weeks are for, the real signs of overtraining, and how sleep affects training, graded by evidence.
VO2 maxWhat VO2 max is, typical scores by age and sex, how closely it tracks a longer life, how accurate watch estimates are, and the training that raises it most.
FlexibilityHow to improve flexibility, from the evidence: static, PNF and strength training compared, how long to hold a stretch, how often, and when you'll see gains.
The splitsHow to do the front and middle splits: the stretches and strength work that help, how long it takes, why hip shape limits some people, and how to avoid strains.
Touching your toesCan't touch your toes? What limits you (hamstrings, back, nerves or body shape), what the sit-and-reach test shows, a 12-minute routine and back pain red flags.
MobilityMobility vs flexibility explained: what mobility training is, what CARs, end-range strength and loaded stretching really do, and a 12-minute daily routine.
Each principle has its own guide with the detail.
You don't need it for your first gains: beginners improve with almost any hard training. To keep improving over months and years, you do. Adding reps and adding weight both worked in trials, in trained people and in beginners.
Stopping 2 or 3 reps short of failure (2 to 3 RIR, reps in reserve: how many more reps you could have done) built about as much muscle and strength as going to failure, in two pooled analyses of 15 studies each. The ACSM says failure is not necessary.
More hard sets per muscle a week build more muscle. About 4 a week is a reasonable floor when time is short and 10 or more builds more. Beyond about 10 sets a week each extra set adds less, and past about 20 the extra gain is small. Strength needs fewer sets than size.
Muscle grew about as much with light weights as with heavy ones when the sets were hard. Heavier weights, around 80% of your maximum or more, built more strength.
About 1 to 2 minutes for most sets, and 2 to 3 minutes for heavy lifts. Resting more than a minute gave a small advantage for muscle growth, with no clear extra gain past about 90 seconds. For strength the evidence is mixed.
Strength work on 2 or more days a week meets the guidelines. For muscle, how you spread your weekly sets matters little: once or three times a week per muscle, and full-body or split routines, gave similar growth when the weekly sets were the same.
Adults need 7 to 9 hours of sleep. In trials, extra protein stopped adding muscle at about 1.6 g per kg of body weight a day, and eating well under your needs stopped muscle gain. A lighter week now and then is optional; the evidence for it is thin.
Simple training kept up for a year brought large strength gains in 14,690 adults. The UK Chief Medical Officers say lasting change is most likely when activity is enjoyable, useful or part of your routine. If you have to stop for a while, most of the strength you built is kept for months.
In 43 studies, adding cardio did not reduce muscle growth or maximal strength. It blunted explosive strength, such as jumping, mainly when both were done in the same session rather than at least 3 hours apart.
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Every plan puts these principles into a week: sets, reps, rest and an 8-week progression. New to training? Start with the beginner plan at home or the 2-day plan.
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 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 beginner gym plan: three full-body sessions a week, alternating workouts A and B, with sets, reps, rest and an 8-week progression.
3 training days45 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 minBeginner4 days a weekA 4-day upper/lower split: two upper body and two lower body gym days, each muscle trained twice a week, with sets, reps and progression.
4 training days50 minIntermediate5 days a weekA 5-day gym split that trains every muscle twice a week: upper, lower, push, pull and legs, with an honest look at the bro split.
5 training days50 minIntermediate6 days a weekA 6-day push/pull/legs plan for experienced lifters: two push, two pull and two leg days, with sets, reps, rest and lighter weeks.
6 training days55 minAdvanced5 days a weekThe classic chest, back, legs, shoulders and arms week, built from our gym workouts, with what research says about training each muscle once.
5 training days45 minIntermediate7 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 minBeginner3 days a weekA weekly workout plan for women: three strength days, cardio and pelvic floor training, with the evidence on periods, pregnancy and menopause.
3 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 minBeginner4 days a weekA 4-day gym workout routine for men: upper and lower days, each muscle trained twice a week, with sets, reps, progression and the evidence.
4 training days50 minIntermediate3 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 minBeginnerA squat, a hip hinge, a push, a pull, a carry and a core move train every major muscle. In your first two weeks do 2 sets of 8 to 12 of each with 3 or 4 reps to spare, then 3 sets with 2 or 3 to spare, as in our full-body workouts. Start with the sit-to-stand or band row if you need an easier version.
3D demoDumbbell goblet squatIntermediate · A dumbbell
3D demoSit to stand from a chairBeginner · A bench or box
3D demoDumbbell Romanian deadliftIntermediate · A dumbbell
3D demoPush-upIntermediate · No equipment
3D demoSupported single-arm dumbbell rowIntermediate · A dumbbell + A bench or box
3D demoBand rowBeginner · A band + An anchor point
3D demoLat pulldownBeginner · A cable machine
3D demoStanding overhead pressIntermediate · A barbell + A dumbbell
3D demoFarmer's carryBeginner · A dumbbell + A kettlebell
3D demoDead bugBeginner · No equipmentPick one and do it twice a week. The beginner sessions need no equipment beyond a chair, a wall and a band; the full-body workouts use dumbbells or a gym.
A 20-minute full-body workout with no equipment: squats, knee push-ups, bridges, lunges and planks.
20 minBeginner10 movesNo equipmentA 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 10-minute session for low-energy days: marching, sit-to-stands, wall push-ups, step-ups and bridges, then a short walk. Doing a little counts.
10 minBeginner7 movesA bench or box, A wallA 35-minute full-body strength workout with dumbbells: goblet squats, presses, rows, Romanian deadlifts and carries.
35 minIntermediate9 movesA band, A dumbbellA beginner full-body gym workout: goblet squats, dumbbell bench press, lat pulldowns, Romanian deadlifts and dead bugs, with sets, reps and rest.
45 minBeginner12 movesCardio machine, A bandFull-body gym workout B: trap bar deadlifts, cable rows, seated dumbbell press, step-ups, leg curls, push-ups and a Pallof press.
50 minBeginner13 movesCardio machine, Other / check instructionsStop exercising and call 999 for:
Call NHS 111 (in the US, your doctor or urgent care) for:
Feeling your muscles work, and some soreness a day or two after a new exercise, is normal. Joint pain that is sharp, gets worse during a set or lingers into the next day is a reason to switch to the move's easier option, and to see a GP or physiotherapist if it persists (our suggestion). In many areas you can refer yourself to NHS physiotherapy without seeing a GP.
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Equipment, rep speed, periodisation and how you split the week made little consistent difference in pooled trials. The programme you keep doing for months matters more.
In trials with more than 38,000 people, over 11,000 of them older adults, exercise did not raise the risk of serious harm. Adults over 50 gained about a quarter to a third in strength, and about 1.1 kg of lean mass, in pooled trials.
It improves walking speed, balance and everyday tasks, and the UK Chief Medical Officers say it matters as much as the 150 minutes of aerobic activity. People who do it have a 10 to 17% lower risk of early death, heart disease, cancer and diabetes, though these studies show a link, not proof of cause.
Soreness is not a measure of progress. Early in training, the extra muscle building mostly repairs damage, and it tracks growth only once that settles, within about 3 weeks. Sets taken to failure gave no clear extra growth. Our muscle soreness guide has more.
Start small: two short strength sessions a week covering a squat, a hinge, a push and a pull, plus walks on other days. Stop every set with a few reps to spare while you learn the moves, then build up. Health guidelines say some activity is better than none, and our beginner and 2-day plans set it out week by week.
Two or three full-body strength sessions, with a day between, meet the guidelines and give each muscle plenty of practice. Add walking towards 150 minutes of moderate activity a week. You can build to more days later if you enjoy it.
Do enough hard sets, stop a couple of reps short of failure, and add reps or weight over time. Rest long enough to keep your reps up, train each muscle about twice a week, recover with sleep and food, and keep going for months. Each principle has its own guide.
No. Bands, bodyweight and home training all improve strength, and machines and free weights give similar results. A pair of adjustable dumbbells makes adding weight easy at home.
Each set should end with about 2 or 3 reps left that you could have done. The NHS puts it as working until you need a short rest before repeating. You don't need to train to failure.
For healthy adults of all ages, yes: in trials with more than 38,000 people, exercise did not raise the risk of serious harm. Build up gradually with good technique. Speak to a GP first if you haven't exercised for some time or have a medical condition or concerns.
Both: the guidelines ask for strength work on 2 or more days and 150 minutes of moderate activity a week. Adding cardio doesn't reduce muscle growth or maximal strength, though it can blunt jumping and sprinting power when done in the same session. Our zone 2 and HIIT guides cover the cardio side.
In trials of six weeks or more, beginners gain measurable strength and muscle size, and scans can pick up growth after about 3 to 4 weeks. Strength rises fastest: even simple training raised it by about a third or more in the first year. You'll notice the change in your log before the mirror.
Do the next one in your plan rather than doubling up. Most of the strength you have built is kept for weeks and months even after stopping, so one missed session changes little.
A short warm-up specific to the exercise is enough: a few minutes of easy movement, then a lighter set of your first lift. Stretching is only a priority if flexibility is your goal. Our warm-up guide has the detail.
Exercise education, not a personal prescription, and clinical review of these guides is pending. Check with a GP before starting hard training if you have a heart condition, chest pain, dizziness or breathlessness when active, and stop for sharp or increasing pain. Health disclaimer.
