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

Muscles make up nearly 40% of the human body and power every move we make, from a child's first steps to recovery after injury. For some, however, muscle development goes awry, leading to weakness, ...

Statins are a cornerstone of heart health, but muscle pain and weakness cause many patients to quit taking them. Scientists have now identified the precise molecular trigger behind these side effects.

Quick anatomy question: Where are your adductors? Never heard of them? (Hint: They're muscles and you've got 10 of them.) Give up? If you pointed to the inside of your thighs, congrats. Each leg has ...

Let’s get one thing straight: Muscle is muscle. Despite what many fitness influencers may have you believe, there’s no such thing as "lean muscle" or "bulk muscle." It’s all made from the same stuff.

The findings could have implications for robotics, prosthetics and energy efficient machines. John McGrath and José Alvarado with HillBot, a robot designed to test parameters of muscle strength and ...

Stop obsessing over your gym time and start focusing on your downtime; experts reveal why your sleep and protein intake are ...

That stubborn belly fat isn’t harmless. Doctors explain how it weakens abdominal muscles, increasing the risk of hernia. Follow these tips to reduce belly fat.