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

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 ...

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 ...

Skeletal muscle is the type of muscle that controls movement. Problems with these muscles can be minor, life-threatening, or ongoing problems that make it hard to perform basic daily activities.

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 ...

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. Not everybody has the ...

There is perhaps no better way to see the absolute pinnacle of human athletic abilities than by watching the Olympics. But at the Olympics – and at almost all professional sporting events – you rarely ...

Depending on the cause, physical therapy, massage, stretching, yoga, relaxation, heat, or other therapies may help release chronically tight muscles. Various factors can cause chronically tight or ...