Unregulated peptides promise to boost muscle, reduce fat, and increase longevity, but experts recommend steering clear.

Forget slogging on the elliptical.

Top coaches reveal how not to lose your hard-earned gains.

A new supplement harnesses the powerhouse of the cell to make you stronger, hardier, and maybe even live longer. Here's what the science says.

Or, why you should stop changing exercises so often.

Trainers and sport scientists explore the "minimum effective dose" to put on muscle.

Better bones without breaking a sweat? Sign me up.

Experts say with the right approach it’s possible.

Here’s why the common fear of gym-goers hoping to bulk up is largely a myth.

When bro science meets actual science.

You can do everything you want to when you’re old—if you train for it.

To eat, or not to eat before a workout? That’s the question.