ABDOMINALS · BODYWEIGHT

How to do the sit up

The sit up trains your abdominals. Here is how to do it with good form.

Sit Up illustration

Step by step

  1. Place an exercise mat on the floor and lie on it.
  2. Bend your knees and plant your feet flat on the floor.
  3. Position your hands in front of your face or behind your head.
  4. Take a breath and crunch your torso by engaging your abs, lifting your upper body to an upright position.
  5. Breathe out at the top position and slowly lower your torso as you breathe in.

Muscles worked

PrimaryAbdominals
EquipmentBodyweight

Sets and reps

Beginner3 sets of as many clean reps as you can, stopping 2 reps short of failure
Muscle growth3–4 sets of 8–15 reps; add a pause or extra load when 15 gets easy
Conditioning2–4 rounds of 30–45 s work, 15–30 s rest

Pick the row that matches your goal. Add weight or reps once every set feels controlled, and log each set so you can see the trend.

Track your progress

Repto shows what you lifted on your last session for every set, suggests your next weight, and starts the rest timer when you tick the set. Your estimated 1-rep max and volume for each exercise are charted over time.

Alternatives for your abdominals

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