The answer may surprise you.

To build muscle mass, you need around 0.5–0.9 grams of protein per pound of body weight per day. Here's why and other factors ...

Some of the best muscle-building foods include protein-rich chicken, salmon, and lentils. You can pair dietary changes with ...

A sports dietitian reveals the best Costco foods for building muscle, from lean proteins to dairy, seafood, and easy recovery ...

Scientists have discovered how exercise protects aging muscles by suppressing DEAF1, a molecule they identified as a driver ...

Working out doesn't just build muscle but, in later life, helps maintain a powerful cellular machine that repairs damaged ...

Plus, exactly how to train to sculpt your muscles.

MRI data shows skeletal frame size predicts muscle potential better than height, weight or BMI ...

Plus, how it differs from strength training and expert tips to program workouts for both approaches.

Scientists at Duke-NUS Medical School have uncovered how exercise helps aging muscles regain their ability to repair ...

12-minute bodyweight workout after 55, with exclusive quotes from certified trainer Michael Betts. Get the 6-move plan.

We all want to know if and how we can come back to form after injury, illness, or a long hiatus. Muscles adapt in response to the environment: They grow when we put in the work and shrink when we stop ...