Whole-body cryotherapy may not be so cool after all, according to the US Food and Drug Administration (FDA).

Yoga is an ancient Indian spiritual practice that millions enjoy today for its many physical and mental benefits. Yoga may bring some relief to people who have arthritis or similar diseases.

You probably think exercising is expending energy. After all that's what running and aerobics require. But yoga, which involves the opposite, has been shown to be healthy for people. Breathing, meditating, and stretching don't seem like hard work, much less exercise.