I read about the concept on the Pay Now Live Later blog. Seems to make sense; bathing in bodies of water was a chilly affair for Grok.
So this morning I took my first ever unheated shower. Yeeeeiiikes! I was gibbering like a madman just to get through it. At the end I felt really refreshed and hyper-alert, but a bit queasy because I did it right after breakfast (next time I'll try it right before).
Does anybody else do cold water bathing? Have you noticed positive health results? What's the best way to do it for maximum effect?