This is a good exercise core muscle development.

Muscle group: Abdominal


Steps

Lie on your back with your arms outstretched to your sides.

Bend your knees at a 60 degree angle and hold your feet up just off the floor.

Keeping your back and arms down, raise your hips up and off the floor so that your knees are over your chest.

Contract your abs for a moment and then return to the starting position.

All exercises