Psalehesost
The Living Force
I start with "cool" and then go to "colder". After the initial shock, it soon becomes quite invigorating - I actually crave more cold water, and it becomes easy to stay in, though at any given time I only shower part of the body. Eventually, though, it becomes too much and I find myself leaving the shower.
One warning, especially for those who shower inside a bath tub - regardless of temperature: Some shower heads can produce rather loud high frequency noise, and being in a bath tub can make this much worse (due to the acoustics). I used to bathe rather than shower, and when I do shower, it hurts my ears a bit unless I wear protection (stuffing something into my ears). Back in 2012, I didn't wear any protection while doing the cold showers, and after a few weeks, I noticed my sensitivity to higher frequencies had been reduced (permanently). Such hearing loss otherwise occurs as we age, but no sense accelerating the process - so if it's uncomfortably loud, pay attention.
One warning, especially for those who shower inside a bath tub - regardless of temperature: Some shower heads can produce rather loud high frequency noise, and being in a bath tub can make this much worse (due to the acoustics). I used to bathe rather than shower, and when I do shower, it hurts my ears a bit unless I wear protection (stuffing something into my ears). Back in 2012, I didn't wear any protection while doing the cold showers, and after a few weeks, I noticed my sensitivity to higher frequencies had been reduced (permanently). Such hearing loss otherwise occurs as we age, but no sense accelerating the process - so if it's uncomfortably loud, pay attention.