Caffeine offers some real health benefits—but not if you go overboard. Here’s how coffee, energy drinks, and other caffeine ...

Common pre-workout side effects include restlessness, high blood pressure, and tingling skin. High doses of stimulants and amino acids are usually the cause.

Creatine is a naturally occurring compound that is mainly stored in muscles, and it's a common sports supplement. It takes weeks for creatine stores in muscles to return to baseline after ...

This study tracked ultramarathon runners across 100 km, 160.9 km, and 230 km events to examine real-world metabolic, hormonal ...

The trend never really died after the Rocky era, but its meaning has changed. Experts explain whether the trend works and why ...

Many popular workout supplements from the 1970s are now banned. Here are a few of the prominent fitness supplements from the '70s that are now illegal.