Swim class

I just starts to learn. Well yeah, I don't know how to swim :)
Today was the first class, and... wow.. I'm full now... drank too much water..

update #1. now I can swim from one side to other side without breathing and with only kicking.. well.. because I do not know how to stroke or how to breath T_T..
Anyway, it's still hard for me to finish one-way trip :)