Calisteniapp

Lie face up on the floor with your legs bent and your arms extended towards your knees.

Perform a partial abdominal crunch, so that you lift your upper back off the ground and return to the starting position

If possible, try to keep your head elevated at all times, to favor spinal flexion

This exercise allows you to work the muscles of the abdominal area, minimizing the work of the iliopsoas.