Muscle-building supplements are increasingly popular with teen boys and young men. New research suggests overuse of products like whey powder or creatine may be affecting young people’s mental health ...

Muscle cramps can strike anyone — from athletes mid-game to expectant mothers in the middle of the night — and they’re more than just an annoyance. They’re sudden, involuntary contractions often ...

In the past month, I’ve encountered three people wearing wrist braces. Because I was curious, I asked all three what they did to injure their wrists. Expecting to hear a story about a snowboarding ...

Unexplained muscle pain in the arms and legs may be the result of benign issues. Or it may point to a more serious underlying condition, such as fibromyalgia, infection, or thyroid issues. Muscle pain ...

DEAR MAYO CLINIC: I've taken up running again and decided to enter a half-marathon. I know I have to push myself to get ready for the race, but I don't want to overdo it. What should I watch out for ...