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Summary: Work your stomach muscles with a stability ball. Learn how to do heel stack crunches on a ball in this free video clip from a personal trainer.
Sue Conrad is a personal trainer with a certification through the American Council on Exercise (ACE) since 2001. She currently teaches cardio kickboxing, and she trains clients of...read more
"O'kay this next clip is going to be hell stack crunches. This is one of my client's favorite exercises. What we usually do is we do ten o one side and then switch ten to the other so a total of 20 reps per set. So we are going to roll down, take your stability ball, stack your heels, hands behind the head and you are going to crunch and as you crunch up the legs come with you. Come up and crunch and relax down nice and slow. Push and exhale on the way up, down nice and slow. You are going to try to keep the neck and shoulders relaxed as much as possible and bring it back down. When you are doing this your heels are going to be pretty much flexed, that is the most challenging way to do this exercise so you are going to do 10 on one side and switch legs. Switch legs and when you crunch forward try to keep a space of a grapefruit or an orange between your chin and your chest so you can really feel the abs squeeze."
eHow Article: Heel Stack Crunches with Stability Ball