I love to swim
Me too. I usually do it for for recreation or sport. 
Really?
Yes. Do you prefer fresh or salt water?
I prefer fresh water
I think thats because it involves coordinated movement of the limbs, which are more difficult in salt water.
I didn't know that
Swimming
Swimming is the self-propulsion of a person through 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 a survival response.
Swimming is consistently among the 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
in God, I've said yes, because I do, but no one ever really has gone any more deeply into it than that, and I have to say that does suit me, because if I talk too freely about that I think the intelligent reader, whether 10 or 60, will be able to guess what's coming in the books.
"Personally", she said of her religious faith, "I think you can see that in the books. Of course, Hogwarts is a multifaith school.