There's something about swimming that opens up my lungs and makes me completely relaxed. I don't know if it's the chlorine or the deep breathing. I too am a slow swimmer with lots of endurance for it.
My only problem is I am one sided breather, always to the right, and after a while it takes a tole on my right shoulder which has to worker harder. I tried breathing to my right last night and then I tried alternating every three strokes, but I just kept getting water up my nose and felt like I was drowning myself, gasping for air. I don't know why I can't breath to the right.
I was a water baby too.
![Big Grin](https://www.3fatchicks.com/forum/images/smilies/biggrin.gif)
I've been swimming since I was four, but never on a team or anything. And I find treading water relaxing.