Most of all I love swimming. This is a very useful sport. Ever since I started swimming, I stopped being sick with the flu and a sore throat. I no the cold is not terrible. Have better posture, improved vision. Also, very nice to swim. Water immediately refreshes, become easy, body glides over the surface, feel strong and agile. Even in a bad mood disappears somewhere. There are several styles of swimming: crawl, breaststroke, butterfly, crawl on back. Each one uniquely beautiful and interesting in terms of technology. Develop different groups of muscles, improves coordination. People, well floating in the water feel almost like fish. Hands instead of fins, legs in the role of the tail. And if you wear fins — obtained very similar. Closer to the natural world, forget human problems.