To start training, you need exactly four movements and 20 to 25 minutes, three times a week. Squats, adapted push-ups, lunges, planks: with those, your whole body works, with zero equipment, in a living room. Here's the 4-week plan, the form cues for each movement, and how to progress without burning out on it.
Four movements sounds too few until you notice what they cover: a knee-dominant push, an upper-body push, a single-leg pattern and a trunk brace. That's most of what a body does. Programs with twenty exercises aren't more complete, they're harder to keep track of and easier to abandon.
The 4 movements that are genuinely enough
The squat: standing, feet shoulder-width apart, sit back like you're reaching for a chair, heels on the floor, stand back up. If balance is tricky, keep one hand on the back of a chair. The most common error is the knees collapsing inward on the way up: think about pushing the floor apart with your feet and it usually fixes itself.
The adapted push-up: against a wall to start, then on your knees, then full. The rule: pick the version where you can do 5 clean reps. The impressive-looking one can wait. Elbows travel back at roughly 45 degrees from the body, never flared straight out to the sides, which is the position that makes shoulders complain within a fortnight.
The lunge: one big step forward, back knee drops toward the floor, stand back up. Keep a wall within reach if you need it. If the front knee hurts, the step was too short. Longer step, and the load shifts back where it belongs.
The plank: forearms on the floor, body in a straight line from head to heels, no sagging lower back. 15 clean seconds beat 45 sloppy ones. Squeeze your glutes and it becomes much harder and much more useful at once, which tells you it was too easy before.
The plan for the first 4 weeks
Two alternating sessions, three times a week (for example Monday, Wednesday, Saturday), never two days in a row.
- Session A (strength, 20-25 min): 3 rounds of 8 squats, 5 adapted push-ups, 6 lunges per leg, 15 seconds of plank. One to two minutes of rest between rounds.
- Session B (easy cardio + core, 20-25 min): 15 minutes of brisk walking or relaxed stair climbing, then 3 planks of 15 to 20 seconds.
- Weeks 1 and 2: A, B, A then B, A, B. Nothing else. The goal of these two weeks is keeping the appointments, not pushing.
- Week 3: add one round to Session A's circuits (4 instead of 3) or 2 reps per movement. Not both.
- Week 4: add 5 minutes to Session B's cardio and take the planks to 25-30 seconds.
Five minutes of warm-up before Session A saves more sessions than any supplement. Nothing elaborate: walk on the spot, roll the shoulders, do a set of squats with no depth, then one at half depth. The point is to arrive at the first working round already warm, because the first round is where beginners hurt themselves.
The progression pace that doesn't burn you out
One rule: a movement only levels up when every rep goes cleanly across all 3 rounds, two sessions in a row. Moving to full push-ups too early means a failed session and dented confidence, for nothing. Slow progression is the kind that sticks. Three months from now, nobody will remember you did knee push-ups for six weeks.
Your body will remember the consistency.
There are three ways to make a movement harder and only one of them is changing the movement. You can add reps, you can slow the lowering phase to three or four seconds, or you can shorten the rest. Exhaust those before switching to a harder version, and the switch will feel easy when it comes.
The movement those four are missing
Worth being honest about the gap: there's no pulling movement in that list, because pulling is the one pattern a bare room makes difficult. Left alone for months, it produces the classic beginner imbalance, a pushing upper body with nothing behind it, and the rounded shoulders usually blamed on desks.
Three ways to fill it without buying anything. A towel looped around a door handle, standing back with straight arms and pulling yourself upright: crude, and it loads the back properly. A sturdy table, lying underneath it and pulling your chest up to the edge. Or a loaded backpack held against the chest and rowed while bent forward at the hips.
Two sets of eight, twice a week, keeps the balance. It goes at the end of Session A, after the push-ups, and it takes three minutes.
And if one purchase is going to happen in the first six months, a resistance band is the one worth making. It costs almost nothing, it lives in a drawer, and it solves the pulling problem for good.
Too hard, too easy: the signals
Too hard: you can't finish the rounds, soreness lasts more than two days, you dread the session beforehand. Drop one round and pick it back up from there.
Too easy: two sessions in a row finished with no sense of effort at all. Add reps.
The right level sits between 5 and 7 on a scale where 10 is your absolute max. You should finish every session feeling like you could have done a bit more.
Soreness deserves a word of its own, because it misleads almost every beginner. It peaks 24 to 48 hours after a session, it's strongest in the first weeks, and it fades as the body adapts. It is not a measure of how good the session was.
Sessions that produce no soreness at all can still be producing everything you want.
What happens after the 4 weeks?
By then the habit exists and your body is ready for real programming: more variety, managed progression, sessions that account for your actual recovery. It's also the point where a generic plan shows its limits: two beginners don't share the same starting point, the same recovery, or the same relationship with effort, and their week 5 should look different.
FAQ
Can you really build muscle with no equipment?
For a beginner, yes, and for a long while. Muscle responds to tension and to progressive overload, not specifically to metal. Body-weight training runs out of road eventually for the legs, where the load is limited, sooner than for the upper body. That point sits months away, and by then a pair of dumbbells is a small purchase.
How long should each session last?
Twenty to twenty-five minutes, warm-up included. Longer is not better at the start: the limiting factor in the first month is tissue tolerance and habit, not time under effort. A short session you complete three times a week beats a long one you do once.
What if I can't do a single push-up?
Start against a wall. The movement is identical, the load is a fraction. When 10 wall reps go cleanly, move to hands on a table, then a chair, then the floor on your knees, then the floor. Everyone goes through that ladder; most people just don't say so.
Is three times a week really enough?
Yes, and it's the frequency with the best track record for beginners because it leaves a full rest day between sessions. Four is fine once the first month is done and none of the "too hard" signals are present. Going to five in month one is the single most reliable way to stop by month two.
Do I need to stretch after?
Not for injury prevention, which stretching doesn't reliably provide. It's worth doing for comfort and range of motion, and five minutes of slow movement after a session is a good habit for its own sake. Do it because it feels good. Being told to is a poor reason.
What if I miss a whole week?
Restart at the previous week's volume, not where you left off, and not from zero. One missed week costs almost nothing physically. What it costs is the habit, which is why getting back in at a slightly easier level, rather than trying to prove something, is what gets you to week eight.
After the plan, a plan built on you
The Vitality Archetype test measures exactly that: your profile across 5 dimensions in 27 questions and 3 minutes, then a week of training generated for you, adjusted with every session's feedback. The plan above for the first 4 weeks, the adapted one for everything after.