Core Strength Exercise #3: Balance Board “Crunch”

Sit on a balance board or a wobble board. Leaning backward slightly, lift your feet off the ground and try to stabilize your abdomen to balancing yourself on the board. This alone is a great deep abdominal work-out. To take it to the next level, lean further back while lowering your legs slightly, then bring your upper body and knees closer together. Stay balanced the whole time.