Last weekend, I went on a rafting trip down the Chulitna. This is the same rafting trip that we did last year, but the weather was even better if possible. It was actually hot on Saturday and Monday!
I had always heard that when you hit that ice cold water you involuntarily take a big breath, which makes you inhale a bunch of water. Fortunately, that was not the case. I swallowed a little, but probably less than if I were pushed into a pool unawares. And our safety briefings paid off -- I remembered what to do and therefore was able to literally keep my head above water.