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Yes, when your about to go to bed it's not ideal, or else you will be filled with energy again haha :P

Yeah but it is perfect in the morning like you said. I don't know much people who love cold showers. Most people including my wife wants warm water.

Because they never test, once you start to get used to cold showers it becomes a routine

Yep... I even advocate to others how good it is with videos and facts.

I always advocate cold showers even after just a week but it is so good