A fluid hydration system for providing a replenishable supply of fluid by replacing a depleted fluid reservoir with a replacement fluid reservoir, and housing such reservoir in a protective housing specifically designed to withstand the rigors of particular rigorous activities, such as football, hockey or combat. The inventive system comprises a conduit for communication of fluid from a supply area, at least one reservoir, releasably securable in an appropriately protective supply area, for containing a supply of fluid, and a connector for releasably connecting the conduit in fluid communication with a selected reservoir.