Everyone's body will respond differently to exercise. Experts say muscles indeed provide benefits but they are not an indication of overall fitness.

“Dehydration before a workout means that your body will be severely lacking in fluids. And since sweat is primarily composed ...

From beet juice to Cialis, fitness influencer Will Tennyson tested six legal performance enhancers over a week. Did they boost strength, or just cause awkward gym sessions? Here's what happened.