Shake Weight

Shake Weight, the continuous shaking motion is supposed to work the arm muscles (biceps and triceps) as well as the chest and shoulders at such a level that muscle development occurs when using the equipment at least six minutes each day over a short period of time.

The technology behind the Shake Weight may sound complicated. However, if simple is what you're looking for in exercise equipment, it doesn't get much more simple than the Shake Weight. The equipment consists only of a large dumbbell-looking component that weighs about three pounds. The product does not require batteries or assembly. You can get started right away toning your arms. If you're worried about monotony, the product does ship with a DVD workout that features varied ways of using the equipment to tone the arms.