Ball Crunch   - (Intermediate to advanced)
(Abdominals)

 
 
1- Start on your back, holding the ball over your legs and feet.
 
2- Do like the "Jack Knife Ab" exercise and squeeze the ball between your hands and feet for 3 seconds.
 
3- When you press the ball you should feel the contraction from your abdominals, tighten your abdominals even more to get a better squeeze on the ball. 
 
4- Relax for 2 seconds and repeat for 8 to 12 repetitions.
 

By Sylvain Lemaire - All rights to Physigraphe (www.physigraphe.com)