Are ball crunches effective?

A study by researchers at the Department of Kinesiology at Occidental College in Los Angeles says yes. The study found that crunches performed on a stability ball (a.k.a. fitness ball or Balance Ball) boosted activation, or flexing, of abdominal muscles by 24 to 38 percent over crunches done without a ball .

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Are medicine ball slams Good for abs?

Depending on which exercises you do, a slam ball works your shoulders, triceps, pecs, calves, back and core (especially your abdominals) . Even if you’re not looking for Schwarzenegger-style muscles, this has its advantages, as the more powerful your muscles are, the faster your metabolism (resulting in less body fat).

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