You’re not alone with the cold water fascination, ice hole swimming is a thing in Finland.
Besides increasing cold tolerance, there’s anecdata that cold showers can help you fall asleep if taken in the evening (lower body temperature is a sleep onset trigger), and that they can help with depression.
I’ve personally tried this and can report truth, but will caveat that the expectation that I will force myself into a morning cold shower often causes oversleeping, which rather exacerbates depression.
You’re not alone with the cold water fascination, ice hole swimming is a thing in Finland.
Besides increasing cold tolerance, there’s anecdata that cold showers can help you fall asleep if taken in the evening (lower body temperature is a sleep onset trigger), and that they can help with depression.
I’ve personally tried this and can report truth, but will caveat that the expectation that I will force myself into a morning cold shower often causes oversleeping, which rather exacerbates depression.