You're relaxing on the sofa when suddenly your eyelid starts twitching. Or perhaps it's a muscle in your arm, your leg, or ...

Muscle pain that does not go away after several days or is accompanied by symptoms such as fever, shortness of breath, and extreme weakness requires medical assistance. Muscle pain, also called ...

A pulled muscle is an injury to your muscle fibers. Muscle fibers are the large cells that make up your muscles. Your muscles allow you to move when they contract and relax. Many people use the terms ...

Experts say the secret to feeling strong in the long term is to focus less on the size of a muscle and more on what it can ...

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 ...

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 ...