Answer:
Swimming is a technique to move unaided through water. It is a popular activity as well as a competitive sport. it was part of the modern Olympic as Athens in 1896. Swimming pools, beaches, lakes, or rivers are popular venues for swimmers. Lifeguards are paid to rescue other swimmers in distress .Swimming also useful in marine biology to study plants and animals. Swimming has become a professional competitive sport. This is a kind of specialized swimming in which the goal is to maximize speed. Breaststroke, butterfly and backstroke are some of the competitive events in swimming. Swimming is a good aerobic exercise, it helps to burn fat and reduce stress. There are several risk factors involved in swimming such as death by drowning, exposure to chemicals, infection, strings, exhaustion, sunburn, collision and inhalation.
