Some start warm water and end with a 30 second cold shower. One theory is that it helps with the avoidance of uncomfortable situations, thereby helping you too decrease your anxiety threat of discomfort, which supposedly helps with procrastination..

I think it is a bit radical and it is a bit out of the box and something tells me it could be helpful, psychologically.Thoughts?

Think it also helps reduce the shock factor of getting into the cold shower and wanting to get out. That also defeats the purpose of one of the supposed benefits though regarded self-discipline and doing hard things if that's why you want to do it.

I've always showered warm then turn it cold to rinse off more so I don't get out of the shower hot and still sweating after the gym before work.

I do a short cold shower to even out the heat from my hot shower of a sauna session. But to me, most showers do not get that cold. And in the summer, my shower's cold is sadly luke cold. I will do a cold shower to help me fall asleep if I am having trouble falling asleep. Sounds counterintuitive I know, but I heard it mentioned a few times for therapies to help people fall asleep, and it usually works.

Capitol Ag said:

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I do a short cold shower to even out the heat from my hot shower of a sauna session. But to me, most showers do not get that cold. And in the summer, my shower's cold is sadly luke cold. I will do a cold shower to help me fall asleep if I am having trouble falling asleep. Sounds counterintuitive I know, but I heard it mentioned a few times for therapies to help people fall asleep, and it usually works.

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I sleep really well after a cold shower, but not if I shower right before bed (which I usually do).

It's good for anxiety in my experience. Sometimes, placing your face in a bowl of ice water (with breaks to breathe) can have the same effect. Vagus nerve stimulation is the theory.

Geriatric Punk said:

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It's good for anxiety in my experience. Sometimes, placing your face in a bowl of ice water (with breaks to breathe) can have the same effect. Vagus nerve stimulation is the theory.

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Gary Brecka describes this as a "contrast shower". Super hot on your back for a min then go to cold for another min or so.

The sudden and extreme cold causes your body to react by contracting your capillaries that are full of blood and relaxed from your body trying to shed heat from your hot shower. You make them cold and your system starts to shift over to the body heat Preservation routine of limiting blood flow to your skin to retain heat. This does cause some interesting sensations and reactions in your body as it is partly hormone regulated.

I did these a few years ago. Started after running in the summer and already being hot when I got in shower. So I started making them cold. Did it for a year or so and switched back to regular.
In the summer, the " cold" isn't THAT cold. In the winter it is cold. Right now it is FREEZING.
MAYBE I'll try it tomorrow.