The Worst Fitness Trends of All Time

Sure, those vibrating lap belts from the 1950s seemed like a silly way to stay in shape, but that didn’t stop people from making more jiggly things like the Shake Weight. This vibrating dumbbell became a media sensation on novelty value alone.

You’re better off saving the $20, buying regular dumbbells, and doing time-tested exercises like curls, lifts, and presses.