Yep, you do not do that until you have been on the mountain for nearly a month. Longest I went without a bath was 28 days. When the snow finally stopped we bathed in a lake with ice still on the edges, but the sun was shining. And it felt sooo... good! After that I swore I would NEVER go that long without a bath, no matter how cold the water, even if had to be snow. But, maybe the clean thing is a girly thing too. I now rarely go more than 2 days without jumping in a lake or stream, no matter how cold. The continual misery of being sticky-sweaty-dirty is far worse than the one minute in cold water. Just do not do it before bedtime or you will have one cold night.