You can burn a lot of calories by swimming and you can really benefit your aerobic exercise routine at the same time. Achieving a restful buoyancy in which you hold in a suspended place in the water while gazing into the sky can be a wonderful experience. A kind of blissful synchronicity can be felt physically and psychologically while exploring both artificial and natural watery domains.
If you are going to swim in a pool though, you may want to be very careful about the risk of contamination. It is a growing problem today but eventually a safer chemical solution will emerge that will help. Another good idea may be to have a better process for exchanging water in real-time. That way, more people may return to the blissful leisure that is hovering with their backs to the waves while examining the texture of clouds.