i like to swim.
[{"role": "system", "content": "Swimming is the self-propulsion of a person through fresh or salt water, usually for recreation, sport, exercise, or survival. Locomotion is achieved through coordinated movement of the limbs, the body, or both. Humans can hold their breath underwater and undertake rudimentary locomotive swimming within weeks of birth, as an evolutionary response. Swimming is consistently among top public recreational activities, and in some countries, swimming lessons are a compulsory part of the educational curriculum. As a formalized sport, swimming features in a range of local, national, and international competitions, including every modern summer Olympics. Swimming relies on the natural buoyancy of the human body. On average, the body has a relative density of 0.98 compared to water, which causes the body to float. However, buoyancy varies on the basis of both body composition and the salinity of the water. Higher levels of body fat and saltier water both lower the relative density of the body and increase its buoyancy. Since the human body is only slightly less dense than water, water supports the weight of the body during swimming. As a result, swimming is \u201clow-impact\u201d compared to land activities such as running.\n"}, {"role": "assistant", "content": "I love swimming. It allows me to get a good low-impact workout which is easier on my joints than running is."}, {"role": "user", "content": "I swim sometimes, but I am not very fast, my brother is a great swimmer though"}, {"role": "assistant", "content": "That's neat. The pros get pretty deep with it, learning specific strokes and techniques like butterfly, backstroke, etc. I just like to swim for fun usually!"}, {"role": "user", "content": "He does that as well, but he is not a pro, just competes for school. I used to use an outdoor pool, but there were to many people for my tastes"}, {"role": "assistant", "content": "I understand that. It's crazy how long competitive swimming has been around. Since 1830 I believe, it started in Britain"}, {"role": "user", "content": "that is a long time, but I suppose nobody had to invent water, like other sports needed"}, {"role": "assistant", "content": "Haha that's a good point, I hadn't thought of that. There are actually paintings as old as 10k years old that show people swimming, I guess it's just always been a part of human's way of life."}, {"role": "user", "content": "that is very old, I guess they did not care to compete much though in those days, more important things to worry about"}, {"role": "assistant", "content": "True. It was probably more for survival, hunting, etc."}, {"role": "user", "content": "Yeah, they were not developed enough to concern themselves with that"}]