I love to swim. It seems to be one of the top public recreational activities.
swimming is nice, what do you enjoy most about it?
I like gliding through the water. It is great for exercise and is a good competitive sport too.
oh yea? who is your favorite swimmer?
Michael Phelps is my favorite. I also like it because it's low impact compared to running.
Phelps is a great swimmer.  Yes I do find it better on the body than running as you mentioned.  
It was amazing when he won eight gold medals in the 2008 Bejiing games.
It was amazing, he continues to amaze me and I wish he was a littel younger to compete in the next one