Swimming is to overcome the resistance of water rather than gravity, and muscles and joints are not easily injured. So swimming is a sport that does little harm to the body.

When swimming, the role of water makes it easy for limb blood to flow back to the heart and accelerate the heart rate. Long-term swimming will make the heart more active and contract strongly. ? Enhance myocardial function and enhance resistance.

Strengthening lung function swimming can improve body temperature regulation and prevent colds. ?

I have been swimming for many years, and I seldom catch a cold these years. The swimming team also greatly relieved the pain of cervical and lumbar vertebrae. Strong cardiopulmonary function, ECG heartbeat more than 40 times per minute per physical examination.