Lie on the floor or a mat on your back, with knees bent and hands behind head. Lift legs and bend knees to 90 degrees. Keep a space between your chin and chest (looking towards the ceiling).
Exhale: Pull knees in toward chest and hold for 2 seconds.
Inhale: Slowly lower legs back to starting position.
N.B: Don’t use your momentum to swing your legs up. Try to keep the motion controlled by your abs.