response: I am not sure about that. Did you know that in Olympic swimming, as well as high school and collegiate, there are undulating strokes and alternating strokes ?
original_response: I am not sure but I am aware it is done as a sport in schools and collegiate as a sport
history: I enjoy swimming ,especially the stroke style Interesting. Swimming is actually the propulsion of the body forward by repetitive body motion Do you know the styles used in swimming? I don't. But I know that the breathing must be in synch with the strokes I thought you should know since you have the information I see, one can manipulate an object or just stay afloat Well that's nice ,when was swimming introduced as a sport?
knowledge: In high school, collegiate, and Olympic swimming, there are two undulating strokes (breaststroke, and butterfly,) and two alternating strokes (front crawl and backstroke.)