As we age, it becomes harder to maintain muscle mass. We'll walk you through some easy steps to keep you fit and healthy.

Hypertrophy is the medical term for muscle growth. Everyone can build muscle, but not everyone will experience the same gains or speed of muscle growth. Genetics, age, hormones, nutrition, and other ...

You have 20 muscles in your forearm, the part of your arm between your elbow and your hand. They help you move your arms, hands, and fingers and perform many of the tasks of daily life. You can strain ...

Imagine you’ve just completed a tough upper-body workout. Your muscles feel a bit tired, but all in all, you’re able to go about the rest of your day just fine. The next morning, you wake up and ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. This is going to get ...

People with sartorius muscle pain may have pain in their knee or the front of their hip. Certain exercises can help strengthen the muscle and reduce pain. The sartorius is the longest muscle in a ...