Tag - beginner runner training

Nowadays, gyms are very popular and there are more and more amateurs of strength and fitness sports.

Bodybuilder's diet is a huge challenge - in the literal sense. Competitors of strength and silhouette sports have caloric requirements even several times higher than an average person!

How important is proper hydration of the body during physical activity? What are the rules of proper hydration? How much water should I drink before and after training?