TIP 8: STRETCH THE ABDOMINALS BETWEEN SETS
TIP 9: DON’T PLACE YOUR HANDS BEHIND YOUR HEAD
It doesn’t matter how careful you are, never hold your hands behind your head during abdominal exercises in which you pull your head toward your knees. If you do. it’s a virtual guarantee that as soon as you start fatiguing. you’ll pull on your head. Pulling on the head will stretch the neck muscles and connective tissues.
Begin curl-up and sit-up exercises by retracting your chin, so your head stays in alignment with your back, and keep your fingers on the side of your head just behind your ears. Paul Chek says it’s also effective to cup your hands on your jaw during these exercises so you look like the kid in the shaving scene in Home Alone - to give adequate support to the neck and to keep the head aligned with the spine.