New research breaks down a formula for how to prevent muscle loss as you age. Here's what you need to know, according to a ...

Ever since I started training my dad, I’ve noticed three major improvements in his fitness: Better posture, balance and functional strength. To achieve this, we work on strengthening his glutes, hips ...

Plus, exactly how to train to sculpt your muscles.

Repeated exercise, or wasting, can change the way key genes work.

Men and women who briefly contracted their arm muscles as hard as possible once daily increased their biceps strength by up to 12 percent in a month. By Gretchen Reynolds Could three seconds a day of ...