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 ...