Swimming is such good exercise. Especially in the summer. Do you swim?
Yes I do swim, my parents taught me as a baby that I could hold my breath underwater and kind of swim.
I like watching competitive swimming also, in the Olympics when they are  happening,
Gotta love the Olympics, some countries are so good because they require swimming as part of the curriculum.
They do a lot of body prep work like shaving to get rid of dead skin, before competition.
That is true, it is sort of a religious practice in competitive sports.
There's a lot of different styles  ,well four , the butterfly, backstroke, breaststroke and freestyle. 
Those are hard, for me anyway. I know competitive swimming has regulations on swimsuits and caps as well.