Hey !! Have you ever heard of Transverse abdominis muschle? It lies beneath the six-pack muscles and supports your internal organs when it is contracted increasing abdominal pressure to allow you to lift more weight. It also help you with your body posture and protect your inner organs.
The other variation of this workout requires yo to kneel down on all fours with your back straight. Breath in and then exhale completely. Now gently draw in your stomach and suck in as hard as possible. Hold your stomach in this position as long as possible. Inhale and repeat.It is suggested that you perform this workout on alternate days of the week for best results.Please remember it does not create six pack abs and you must do some other workouts if you want to have six pack abs.pinit:))