Cold shower? There are no bonus points for effort. Just take a shower if you can.

Extra levels of suffering suck and don’t add anything to the experience. Basic self care is a good start. Trying to prove something to a straw man in the mind is silly.

There is some evidence that taking cold showers is materially beneficial. If you don’t have some underlying heart condition and can handle them, they’re not bad, and they’ll save on electricity/gas. The “nofap” thing is what concerns me, since that’s a very “manosphere” concept with no middle ground between healthy sexuality and a crippling masturbation addiction (IIRC the former sometimes comes with crazy, unsubstantiated benefits in the fiction of the manosphere).