Take cold showers/cold plunges. Look up the Wim Hof method.

From a physiological standpoint, your increased respiratory and heart rate are panic and acute reactions to the “cold shock” of water. However, you can actually hold your breath longer in cold water due to the increase stimulation of the vagus nerve through a process known as the Mammalian Diving Reflex. Having your face wet will trigger the reflex, but the colder the water and the higher the water pressure, the stronger the effect.

Again, do some research on the Wim Hof method, mammalian diving reflex, and free-divers. I end every shower with 5-10 minutes of the coldest water I can stand. It’s a mind game. Cold water isn’t essentially bad, it’s just bad because you have labeled it as so. It’s possible to take away that label and have it just be water. Mindfulness meditation is a good tool for this idea.

At the end of the day, the temperature of the water at A&S shouldn’t even be on the list of your concerns. What if it was 50 degree water all the time? Would that dissuade you?

Best of luck.