Procedure:

• Lie down on the floor mat by placing your hands on the floor. You can also put them behind the head.
• Slowly bring the knees to the chest for 90 degrees. You can keep your feet together or crossed.
• Pull your abs and take off the hips above the floor till the legs are to the upwards direction.
• Come back to the normal position. You can do this 1-3 sets of 12-16 reps.
• Let the abs lift your hips. Don’t swing the legs.

The reverse crunch is the 7th best ab exercises that strengthen rectus abdominis.