Leucine is the amino acid that signals your muscles to start repairing and growing. Here’s why it matters.

Building muscle has serious perks.

New research shows that when you drink your protein shake matters less than you think—but timing can still make a difference for recovery, energy, and performance.

“They increase the quality of the muscle you build as opposed to just the size of the actual muscle.” ...

When you train your muscles (either by lifting weights, running, or doing resistance work), you create tiny microtears in your muscle fibers. While this might sound detrimental, it’s actually a good ...

Challenging the belief that animal protein is the superior type for building muscle, scientists have shown that there is actually no difference in eating meat and dairy or plant sources following a ...

Some workouts leave you buzzing, muscles pumping, and energy on high. Others leave you wondering if you made any progress at all. The difference often comes down to more than just the weight on the ...

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

What's a typical rate of muscle gain? Every body responds a little differently to strength training, so the short answer is “it depends." One review of research on how resistance training impacts ...

Merve Ceylan is a dietitian and health writer with four years of experience writing for companies in the nutrition and health industry. Nick Blackmer is a librarian, fact-checker, and researcher with ...