Claims: "Firms and tones your inner thighs, shapes and tones your stomach and abdomen, and tightens your upper arms."
Expert Opinion: According to Nicole Palacios, a certified personal trainer and fitness pro, the Thigh Master actually does target and tone the thighs as it promises. If used for the chest, it also hits the chest area, Palacios says. But you can also work the butt and thighs in a number of different ways, such as with squats, lunges, or plies. "As a trainer, I always try to incorporate exercises that work a variety of muscles simultaneously so you're not in the gym for hours doing individual muscle groups," she says. "If you're using this device with the idea in mind that you will work your thighs and they're going to get tighter/smaller by doing just one exercise, you are mistaken. Spot reduction is a myth—you cannot remove fat from one area of the body in isolation by doing exercises targeting that area alone."