I lived, for a short time, in an old house and the hot water heater didn’t work so I took cold showers everyday. It took my breath away when I first got in but felt good after I adjusted to it. It was the summer time so I think that helped.
Oh man I hate cold showers so much. I had to take them in jail. It’s just the worst. One of the nine or ten showers I took there had hot water, and it felt like a divine revelation just to have a hot shower.
So I have failed the challenge, I declare you the victor lol
There’s a guy named Wim Hof who climbed Mt. Everest in a pair of shorts without extra oxygen who gets his stamina from cold exposure therapy. I did his training for a week which required cold showers daily, and eventually I decided that the stress isn’t worth the potential benefits.
Maybe when my head stops hurting I’ll pick it up again.