Thanks for the link and return comment over on YT.

Yeah, cold showers are tricky in a cold house during winter when I'm feeling especially cold because I've been sitting down for hours! Temperatures get down to around -5 in the mornings and our crappy electric heaters don't do much to help us with this. So I prefer the exercise idea. After which a cold shower can be taken more easily. Thanks to you I did my first workout routine in ages yesterday and today I can feel my body again...

It was interesting to note how it kept me warm for a good hour after it. So yes, multiple workouts per day would at the very least enable me to take off the jacket & scarf while working at my desk!