Swimming
Swimming is moving through the water by moving the arms and legs. Prehistotic people probably learned to swim by watching animals that swam. People have been swimming for thousands of years, but swimming as an organized sport is fairly new. It began in the 1800s.
Swimming movements are calls strokes. Some of the strokes are the crawl, the breaststrokes, the butterfly, the crawl is the fastest stroke. Swimming is an excellent exercise because it involves almost all the muscles in the body.