HighlightsLenny Kravitz, 62, credits natural training for his famous six pack. His trainer reveals a 336-rep ab routine done ...

Building defined abs in your fifties doesn't require extreme diets or endless crunches.

You don’t always have to skip the gym when premenstrual syndrome or your period makes exercise uncomfortable. Scroll down for ...

Almost. In the music video "TK421," the musician appears completely nude. It's no surprise he does this with confidence, as ...

Brad and Mike demonstrate the 3 most effective leg exercises for blood flow and balance.