The half situp is an abdominal exercise performed with body weight. It involves curling the upper body off the ground to a 45 degree angle, primarily targeting the abs and secondarily engaging the hip flexors.
Also Works
Hip Flexors
How to Perform
1
Lie flat on your back with your knees bent and feet flat on the ground.
2
Place your hands behind your head with your elbows pointing outwards.
3
Engaging your abs, slowly lift your upper body off the ground, curling forward until your torso is at a 45 degree angle.
4
Pause for a moment at the top, then slowly lower your upper body back down to the starting position.