Swimming

Swimming is the method by which humans (or other animals) move themselves through water. Swimming is a popular recreational activity, particularly in hot countries and in areas with natural watercourses. Swimming is also a competitive sport. There are many health benefits of swimming, yet basic swimming skills and safety precautions are needed to participate in water activities. The human body, being composed mostly of water, has nearly the same density as water. Thus, staying afloat requires only a slight propelling of water downward relative to the body, and transverse motion only a slight propelling of water in a direction opposite to the direction of motion, due to generally low hydrodynamic drag. This propelling is typically accomplished by cupping the hands and using them as paddles, and by kicking the legs to push water away from the body. With practice, technique can convert a slow swimmer to at least fast swimmer.