Swimming is also one of the effective means of hardening of a person, contributing to the formation of resistant hygienic habits. The water temperature is always below the temperature of the human body, therefore, when a person is in the water, his body emits 50-80% more heat than air. Bathing and swimming are raising resistance to colds. If swimming is carried out in natural water, tempering the effect of natural factors of nature - the sun and the air. Swimming eliminate disorders of posture, flat feet, almost harmoniously develop all muscle groups, especially the shoulder girdle, arms, chest, abdomen, back and legs. Swimming well coached activity of the cardiovascular and respiratory systems.