You have over 600 muscles in your body. So many, in fact, that muscle makes up about half your weight. It may seem muscles take up more than their fair share, but they have good reason to make such a heavy claim to your frame: muscles are your body’s primary source of power. Whenever something inside you needs to move, chances are your muscles make it happen.

A muscle sprain or strain may sideline you to the couch. But while you’re resting up, do you ever wonder...what are my muscles doing right now? Your body has some clever gadgets to help you heal. While you’re catching up with your favorite show or re-reading a book, your muscles are calling on their own in-house repair team, which is always waiting in reserve to help you out in a pinch (or sprain).

Hello, Adventurers! Dr. B here again, ready to answer all of your burning questions. Speaking of feeling the burn, today we’re talking about sore muscles. We’re told, “No pain, no gain,” but do you ever wonder what causes the tenderness in your triceps, the fatigue in your forearms, or the cramp in your calves after a day of hard exercise? Fortunately, I have a  tendon-cy  to know these things! Read on to learn why some of your most helpful body parts can make you feel so miserable