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muscle growth

Will l-glutamine give your fitness routine a boost?

Why is every trainer in town telling you to add this trendy amino acid to your smoothie? We got the scoop.

New studies say hormones don’t promote muscle growth. But are they right?

The claim that what we’ve all thought is gospel for nearly 20 years—that high-intensity training elicit a hormone response that makes you stronger—is bunk, is being met with skepticism from experts.