How to: Lie on the floor with your knees bent. Sit up, placing your arms straight out - again, not to hurt your neck - and bring your chest to your knees. A reminder: Once you feel comfortable doing these first two exercises, start your workout with exercise 2 and combine it with exercise 3.

Safety hint: Again, be aware of gack pain. In fact, be aware of any pain. These exercises will dramatically improve your strength if you perform them regularly. You need not strain yourself to the point of exhaustion.