Flexion Leg Sit-Up (Bent Knee)
From lying flat, sit up as one straight leg rises and the bent knee draws in, the arms reaching forward at about 45°.
How to do it
Setup
Lying on the back, one knee bent with the foot flat, the other leg long on the floor, arms overhead.
Steps
- Sit up as the long leg rises straight and the bent knee draws in.
- Reach the arms forward at about 45°, past the knee.
- Roll back down under control; switch legs between sets.
Common mistakes
Throwing the arms to get up: the abs lift the chest; the arms only reach. Rising leg bending on the way up: keep it straight; it rises with the torso. Dropping flat at the bottom: roll down under control.
Breathing
Exhale sitting up, inhale rolling down.
