Feb. 1, marks the beginning of American Heart Month and now is a good time to start thinking about your heart.

I challenged myself to do 50 squats every day for two weeks. Discover my surprising results, from muscle gains to increased energy.

The other "show me" muscles include the abs, pecs, and biceps. Quads' counterparts—the hamstrings, the muscles that run along the back of the thigh—are underworked, ultimately leading to imbalances ...