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I was actually wondering today if hot/cold cycling the head could increase lymphatic drainage and increase cerebrospinal fluid cycling.

Cold shower, hot shower, cold shower etc on the head... Will I become mega mind?

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It is pretty common to jump into a cold bath after spending time in a sauna

Regardless of actual health effects, it feels fantastic!

Yes it does but not sure if recommended for people with heart problems. But yes, hot cold cycles reset the nervous system and yes, it feels great afterwards. The worst I find is the initial moment before plunging in cold water and the more I hesitatie the harder it gets

The main psychological benefit of taking only cold showers over the last five months is practice with starting an action I don’t want to do, because oooh there have been times when I was already cold and despite knowing I’d feel great afterwards, the present moment was scary.

I’ve been wondering the same. I think of inducing heat/cold similar to turning a rusty spigot. The first few turns are difficult but the more you do it the easier it gets.

But do spigots in other parts of your body get turned that are also rusty, so to speak?

I notice cold/hot showers help my body regulate my temperature better, generally.

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