CSB: I remember a few years ago I was dabbling in the Wim Hoff method just to see what it was all about.
For those not familiar, it is basically a two step method of stress to reinvigorate the body and connect it back to its evolutionary/genetic roots or some shit.
The first part of the method involves cold water plunges on a regular basis. It's more than that but that is the basic premise.
Part two is an involved breathing method that has some similarities to hyperventilating which is done daily. Again, it is more involved than that but that is the overall deal.
I did not do cold water plunges since I didn't have a means to do them, so I substituted cold showers.
I did the breathing for about 10 days and started off with being able to hold my breath for about 90 seconds. After day 10 it was over 5 minutes. I also lost like 7lbs.
Some people pass out during the breathing excercises so they recommend not doing them in the open water.
Can't imagine going to that depth tho.