more athletic legs. A study in the International Journal of Exercise Science that compared muscle activity in the back squat ...

Calf raises are a simple way to work the lower backs of your legs. Plenty of sports, such as hiking, swimming, and tennis, can also give them a good workout. New to exercise or feel out of shape?

The benefits of calisthenics depend ... You also can make exercises harder by changing your body position. Try raising your legs on a platform or a step while you do push-ups.