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 ...

It might be more than you think.

Ever wonder why some people seem to pack on muscle effortlessly while others spend months in the gym with little to show for it? Muscle growth isn't just about lifting weights -- it's a complex ...

Plus, exactly how to train to sculpt your muscles.

Building and maintaining muscle mass is important for everyone, regardless of age — and one of the strongest predictors of long-term health.

The physical changes that come with training are a sign that you are doing something right. They are a display of hard work, ...

Eat 1.6-2.2 grams of protein per kilogram of your body weight daily to optimize muscle growth. Try pairing a high-protein diet with resistance training to build muscle. Animal sources of protein ...

This story is from Manual, GQ’s flagship newsletter offering useful advice on style, health, and more, four days a week. Sign up here to get it in your inbox. Whether you’ve been lifting for years or ...

Brian is a New York–based science and health journalist. His work has been published by The Atlantic, The Paris Review, The New York Times For Kids, CBS News, The TODAY Show, Barron's PENTA, Engadget, ...

Let's face it: you’re probably not as lean and muscular as you were 10 years ago – especially if you’re well past your 30s, when most people tend to start the unfortunate process of losing muscle mass ...