Learn how to identify and treat a muscle strain that leads to armpit pain. Get to know how to gauge severity and recovery timelines.

The flecks of gray in his otherwise-dark beard reveal middle age, at least in football years. Washington Redskins linebacker Brian Orakpo turns 27 during training camp. He’s only four years into a ...

We lift to grow and strengthen our muscles, so it’s natural that a lot of us find bodybuilders’ piece-by-piece mindset appealing: You focus on the specific muscle that you want to work, and make sure ...