8-week workout plan to build strength and muscle, 3 or 4 days a week

Choosing your starting weightEmerging evidence

Warm up, then pick a weight you think you could lift about 10 to 12 times at most. Do the bottom of the rep range (for 8 to 12, do 8) and ask: how many more could I have done with good form? Two or three more: that is your weight. Five or more: go up one step next set. None or one: go down one step.

For bodyweight moves, choose the version (the easier or harder option on each move's page) where you reach the bottom of the rep range with 2 or 3 reps to spare.

In the first two weeks, stop each set with 3 or 4 reps to spare. Most people misjudge how many reps they have left by about one, and you are still learning the movements.

Sources 1, 2, 3

Progressing week to week: double progressionEmerging evidence

Each exercise has a rep range, such as 8 to 12. Keep the weight the same and add reps, set by set and session by session, while still stopping 1 to 3 reps short of failure.

When every set reaches the top of the range, add the smallest weight step you have (roughly 2 to 10%, smaller jumps for the upper body and small muscles) and go back to the bottom of the range. Adding reps and adding weight both work; this rule uses both.

With body weight, add reps, then slow the lowering, then move to the harder option. If a lift stalls for 2 or 3 sessions, hold the weight, check your sleep and food, and consider a lighter week.

Sources 4, 3, 1

How hard each set should feelStrong evidence

You do not need to train to failure. Stopping 2 or 3 reps short, often written as 2 to 3 reps in reserve (RIR), gives similar results for most people.

Big compound lifts stay at 2 to 3 reps in reserve; the last set of small isolation moves, such as raises and curls, can go to 0 to 2.

Sources 1, 5

Rest between setsEmerging evidence

Heavy compound lifts in sets of 5 to 8 (squat, deadlift, bench press, overhead press, chin-up): 2 to 3 minutes. Other compound lifts in sets of 8 to 12: about 90 seconds to 2 minutes. Isolation moves such as raises, curls, extensions and calf raises: 60 to 90 seconds.

For muscle growth, resting more than about a minute gives a small advantage, with no clear extra gain past about 90 seconds. For strength the evidence on rest is mixed: 1 to 2 minutes is enough for beginners, and trained lifters may do better with longer rests on heavy lifts.

Short on time? Pair two moves that do not compete, such as a press with a row or a leg move with a core move, and rest after the pair. Supersets like this cut session time by about a third to a half while keeping the sets.

Sources 6, 7, 1, 8, 9

Lighter weeks (deloads)Mixed evidence

Not compulsory, especially for beginners. Take one in week 8, together with a review of your first lifts, or sooner if your performance drops for two sessions in a row and you feel run down or achy: same days, same exercises, about half the sets, and weights that feel easy (4 or more reps in reserve). Then restart at your previous weights.

Deloads are common practice: in a survey of competitive strength and physique athletes they lasted about a week, roughly every 5 to 6 weeks. Direct evidence is thin: three small trials. In trained adults, a full week off mid-programme did not change muscle growth but slightly reduced strength gains. In one small trial in 19 untrained men, with no control group, two lighter weeks neither held back nor added to gains; the second came just before testing, so it also worked as a taper. After very high-volume training, a lighter week and a week off gave similar results in 30 trained men. So a lighter week looks better than a week off if strength matters.

Sources 10, 11, 12, 13, 14

Warm-up and cool-downEmerging evidence

Warm up with 3 to 5 minutes of easy movement, the moves listed at the start of each session, then 1 or 2 lighter sets of the first lift. A short warm-up specific to the exercise is enough.

The cool-down is optional. Its stretches are there for comfort and flexibility; they do not add strength or muscle.

Source 8

Missed days, soreness and when to stop

Missed a session? Do the next one in the order rather than doubling up. Muscle soreness for a day or two after a new exercise is common and fades as you repeat it.

Stop and get medical help for chest pain or pressure, unusual breathlessness, dizziness or fainting. If a joint pain is sharp, gets worse during a set or lingers into the next day, swap to the move's easier option, and see a clinician if it persists.

WHO notes that people without contraindications generally do not need medical clearance before light or moderate activity. If you have a heart, lung or metabolic condition, are pregnant, or have osteoporosis with fractures, ask your clinician first.

Source 15

What 8 weeks buildsEmerging evidence

Eight weeks is long enough for measurable muscle. Thigh muscle size rose about 10% in 8 weeks in 25 untrained men, some of the early rise being swelling, and push-ups or a light bench press twice a week raised chest muscle thickness by about 22% and bench press strength by 5 to 8% in 18 young men. In 34 trained men, strength rose with as little as three 13-minute sessions a week, while muscle grew more with more sets.

Across 111 studies in men, lasting from 2 weeks to a year, the average gain was about 1.5 kg of muscle. People differ hugely: after the same 12 weeks of arm training, biceps size changed by anything from 2% smaller to 59% bigger in 585 adults.

Sources 16, 17, 18, 19, 20

Sets first for muscle, heavier loads for strengthStrong evidence

More weekly sets build more muscle, with smaller returns as you add more, and the returns shrink sooner for strength. Strength rose most with heavy loads (80% of your one-rep max or more, roughly the most you could lift about 8 times), 2 to 3 sets and the lift early in the session, while muscle grew with light or heavy loads when the sets were hard. So the plan keeps most work at 8 to 12 reps and makes each day's first lift heavier in weeks 6 and 7; that timing is our editorial choice. You don't need to go to failure.

Sources 21, 22, 1, 23, 5

How much training this isStrong evidence

Counting direct sets in the build phase, this plan gives about 7 hard sets a week for the chest, 12 for the back, 12 for the shoulders (presses, raises and face pulls), 18 for the quads, 12 for the glutes and hamstrings, and 4 each for the biceps and triceps on 4 days, rising in weeks 6 and 7 to about 13 for the shoulders, 13 for the glutes and hamstrings and 6 each for the arms; the 3-day option gives about 7 to 8 for the chest, 9 for the back, 4 to 5 for overhead pressing and 12 each for the quads and the glutes and hamstrings.

More weekly sets build more muscle, with diminishing returns that arrive sooner for strength than for size. The 2026 ACSM position stand saw extra growth from about 10 or more sets per muscle a week, and a review of time-efficient training suggests about 4 hard sets a week as a reasonable floor for busy people.

That reaches 10 or more sets for most muscles on 4 days; the chest and the arms' direct work sit below it, so add a fourth set of incline presses if your chest is the priority.

Sources 1, 21, 22, 8

Full body or split: similar resultsStrong evidence

When weekly sets are matched, full-body and split routines give similar strength and muscle gains, and how often you train a muscle matters little for growth. So the choice is about your schedule, session length and what you enjoy.

Sources 24, 25, 22

Your week 8 review

Week 8 shows you what changed: one set of 5 on each day's first lift, with a rep or two to spare, against your week 2 log. A set of 5 stopped 1 or 2 reps short is a repeatable check that needs no all-out lift; never test to failure on your own, and use the safety pins. The review and its timing are our editorial choices.

Keep your gainsEmerging evidence

If life gets busy after 8 weeks, a little keeps a lot, though the evidence is thin. In a narrative review, younger adults kept their strength and muscle size for months with one session a week and one hard set per exercise, as long as the weights stayed heavy; older adults may need up to 2 sessions a week and 2 to 3 sets per exercise. In one trial of 70 adults, a much smaller dose kept muscle in 20 to 35 year olds but not in 60 to 75 year olds.

Time off costs more the longer it lasts, though short breaks cost little: in a trial of 14 young men, three 6-week blocks of training with 3 weeks off between them gave the same gains as 24 weeks of training without a break.

Sources 26, 27, 28, 29

Protein: enough, not endlessStrong evidence

In 49 trials of 1,863 people, protein supplements added a little to strength and muscle gains from training, and muscle gains stopped rising at total intakes of about 1.6 g per kg of body weight a day; the benefit shrank with age. Food can cover it, and our protein calculator works out your figure.

Source 30

Cardio does not cost you muscleStrong evidence

Doing cardio as well as strength training does not reduce muscle growth or maximal strength. It can blunt explosive strength, such as jumping, mainly when both are done in the same session; keep them at least 3 hours apart if that matters to you.

Source 31

Check firstStrong evidence

Answer the 7 questions of the PAR-Q+ (the Physical Activity Readiness Questionnaire for Everyone) before you start. They cover a heart condition or high blood pressure, chest pain, dizziness or fainting, another long-term condition, medicines for one, a bone or joint problem that more activity could make worse, and being told to exercise only under medical supervision. A yes leads to follow-up questions that may send you to your GP or a qualified exercise professional first. With a cold or fever, wait until you're better; if you're pregnant, talk to your midwife or doctor first.

The NHS suggests speaking to a GP first if you haven't exercised for some time, or have a medical condition or concerns. The World Health Organization (WHO) notes that most people without such problems don't need a medical check before light or moderate activity, and the American College of Sports Medicine's (ACSM's) screening looks at how active you are now, any symptoms or known heart, metabolic or kidney disease, and how hard you plan to train.

Hard, all-out effort briefly raises the risk of a heart attack or sudden death from a heart problem in people at risk, mostly those who rarely exercise, and warning signs often come first. If you're over 45 and not used to it, the PAR-Q+ asks you to check with a qualified exercise professional before very hard efforts. Whatever your age, breathe out on the effort rather than holding your breath, which raises blood pressure, as the British Heart Foundation advises.

With uncontrolled high blood pressure or heart disease, check before you lift heavy.

Sources 32, 33, 15, 34, 35, 36

Stop and get helpStrong evidence

Call 999 in the UK or 911 in the US for chest pain that comes on suddenly and doesn't go away, feels tight or like squeezing or pressure, or spreads to your arms, neck, jaw, stomach or back; chest pain with sweating, feeling sick, light-headedness or breathlessness; severe difficulty breathing; or signs of a stroke, such as one side of the face drooping, weakness in one arm or slurred speech, even if they pass. Don't drive yourself to hospital.

Call 999 or go to A&E for palpitations that don't go away, or that come with chest pain, breathlessness or feeling faint. Call 999 if someone has fainted and isn't breathing, or can't be woken within a minute, and see a GP after any faint. Contact NHS 111 (in the US, your doctor or an urgent care centre) if you're suddenly more short of breath than usual, or have chest pain with feeling sick or a heartbeat that races, skips or flutters.

Dark, red or cola-coloured urine, much less urine than usual, or very painful, weak or swollen muscles after unusually hard training can be rhabdomyolysis, a breakdown of muscle that can harm the kidneys: get medical help the same day.

Bench press and squat with the safety pins set, or a spotter, and use collars. The heavier sets of weeks 6 and 7 still stop 2 to 3 reps short.

Sources 37, 38, 39, 40, 41, 42, 43