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Sit-Up demonstration
Exercise library

Sit-Up

The sit-up is a classic bodyweight core exercise that trains the abs through a full trunk flexion from lying to sitting.

BodyweightCoreBeginner
Equipment
Bodyweight
Focus
Core
Level
Beginner
Suggested sets
3 sets of 12–20 reps.
Muscles worked
AbsObliques

How to do it

  1. 1Lie on your back with your knees bent and your feet flat on the floor.
  2. 2Cross your arms over your chest or place your hands by your head.
  3. 3Brace your core and curl your torso up toward your knees.
  4. 4Sit all the way up while keeping the movement controlled.
  5. 5Lower yourself back down under control until your shoulders touch the floor, then repeat.

Tips & tricks

  • Curl up one vertebra at a time rather than jerking up.
  • Keep your chin slightly tucked but do not pull on your neck.
  • Anchor your feet or have a partner hold them if they lift off.

Common mistakes

  • Yanking on the head and neck to get up.
  • Using momentum by throwing the arms forward.
  • Letting the lower back arch instead of curling the spine.

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