The ergogenics of fluid and electrolyte balance.

Fluid and electrolyte balance within a fairly narrow range is a requirement for human life. Athletes, particularly endurance athletes, routinely stress their bodies to the point of altering fluid and electrolyte levels. In some cases, significant fluctuations can lead to deterioration in performance and even the athlete's health. The body's physiologic response to such fluctuations of fluid and electrolyte levels is complex and not completely understood. This article examines how the body copes with changes in fluid and electrolyte balance and how these changes may be minimized via replacement to sustain athletic performance.