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The Effects of Cold Water on the Nervous System
The vagus nerve is responding to this nonstop being comfortable. This is why things like cold water are becoming popular because it is a good form of stress that temporarily causes the fight or flight system to turn on. It's not too hard that we can't handle it. And then when you turn it off, you train the vagus nerve to activate. You tone it up. So there's a reason why people are starting to search out discomfort actively in their life more.