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 ...

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 ...

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

Still dealing with a tight hip or weak glute—despite all the foam rolling, stretching, and strengthening? Or, maybe you’ve had an injury that keeps flaring up, even though you thought it was finally ...

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 ...

If you've been logging serious hours at the gym, but your physique isn't showing the results, the issue probably isn't your fitness training plan. It's what's on your plate. Lifting weights breaks ...