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 ...

By Hugo Francisco de Souza New research shows that even seasoned ultramarathoners face profound energy loss, muscle breakdown ...