Hydration habits in Spanish elite athletes.

Introduction: Creatine is a supplement widely used by force athletes or whose goal is to gain muscle mass storing water in the intracellular space. Creatine has the ability to remove plasma water from the bloodstream into skeletal muscle in a process called muscle myofibrillar hydration or hydration. Although this benefits the skeletal muscles, less water is available to other tissues since most cell physiological and chemical reactions in the body need water.