All muscles
Loading 3D model…
Drag to rotate · scroll/pinch to zoom · tap to select · double-click to zoom in on a muscle

Abdominals

Sit-Up

Sit-Up (Start)Sit-Up (End)

A classic trunk exercise that curls your torso from lying to sitting to work the abdominals.

Primary musclesAbdominals

Energy burned

≈ 17 kcalFor 3 × 8–12, rest 90s · ≈ 2.9 kcal/min

Estimate range 12–21 kcal (±25 %)

Muscle mass worked4 %
Effort during a set4.5 MET
Your lean mass53.5 kgBody fat estimated from BMI and age

Body-weight exercise: your whole body is the load, so heavier people burn more.

Estimate ±25 %: muscles worked (from the exercise data), sets, reps, rest and your body. See the planner for whole sessions.

Setup

  1. 1Lie on your back with your knees bent and feet flat on the floor, anchored if needed.
  2. 2Cross your arms over your chest or rest your fingertips lightly beside your head.

How to perform

  1. 1Brace your abs and curl your torso up toward your knees.
  2. 2Rise until your chest is close to your thighs without yanking on the neck.
  3. 3Pause briefly at the top.
  4. 4Lower slowly back down, one vertebra at a time.

Alternatives

See all

More with Bodyweight

See all

Stretches for Abdominals

See all