Men are always focused on Water,due to the advantages it brings. Water is the origin ofeverything. Water activities in particular have alwaysbeen of interest because of their possible therapeuticpurposes, both due to the biological characteristictypical of water and to the kinesiological aspects it isable to develop. Water causes various reactions on human body,depending on use conditions and temperatures. Forinstance, cold water reduces inflammations andcongestions because it contracts the blood vessels; while hot water reduces muscular tension, increasessweating and speeds up blood circulation because itdilates the blood vessels.Swimming itself, also, is a valid help and a completionexercise for muscular reinforcement, movement andfunctional abilities; furthermore, it is a therapeutic andrecreational element for children in particular. The normal swimming activity in small pools (smaller thanthe ones usually conceived for complete swimmingactivity) can be simulated by using the properequipment for “upstream swimming” which generatesa jet of air and/or water with variable pressure whichopposes the motive force generated by the batherswimming movement.