I'm here... sorting clothes and food and other somewhat domestic tasks.
OK... while I'd not do the cold shower, I have done the thing where you soak in a hot tub and then jump in a cold lake. Felt great. But that was many moons ago.
I dunno if I'd try that today. Sounds like a coronary-inducement now. :-)
Heh, yes, I can imagine that could be a problem. At my age, if my heart's gonna give out from something like that I'd just rather die.
I am no good for anything tonight. Good thing I got ahead on writing.