How to do the Sit-up
Lie on your back with knees bent and feet anchored.
Cross your arms over your chest.
Raise your whole torso until you're sitting up, in a controlled motion.
Lower slowly back to the floor.
Sets and reps
| Goal | Sets | Reps | Rest |
|---|---|---|---|
| Muscle growth | 2–4 | 10–15 | 45 s |
| Muscular endurance | 2–3 | 15–25 | 45 s |
When you hit the top of the rep range on every set, add a rep or a harder variation next session.
Starting points from training research. Stop each set 1–3 reps short of failure.
Muscles worked
Primary
The abs flex your spine and stop it from arching. Mix crunching moves (crunches, leg raises) with anti-extension work (planks, rollouts).
Alternatives
Same muscles, similar movement: swap in one of these if the Sit-up doesn’t suit your gym or your joints.
Train smarter
- 2 day workout plan: build muscle training twice a weekA 2 day workout plan that still builds muscle and strength: two full-body sessions, sets and reps, supersets to save time and what results to expect.
- 30 minute gym workout: templates that build muscleA 30 minute gym workout can build real muscle. Supersets, smart exercise choice and three ready-to-use templates for 30 to 45 minute sessions.
- 4 day workout split: best options and a full programWhich 4 day workout split is best? Upper/lower, full body, torso/limbs and bro splits compared in brief, then a complete 4-day program with sets and reps.
