You can pay me a million bucks and I will not jump in the water. The people that do this are stupid. Why do you want to do this to your body? Has anyone in this forum tried to jump in freezing water? And have you thought about seeing a psychiatrist? If not, then please see one.
It is surging in popularity alright, now 2 people do it, instead of one. Of course I am just kidding, here is the champion: