The most important reason is that swimming is the only sport which can save your life. . Drowning is still one of the most common causes of accidental death in people, so being able to swim is an essential life-saving skill. There are huge physical benefits to swimming, such as the full-body cardiovascular and respiratory workout. This develops a person’s stamina, flexibility and muscle strength using the water as resistance—and also builds their concentration. People who swim tend to be stronger and more coordinated.