Haha, the classic cold shower. Actually when we were poor back then, having a heater was a privilege, and was too malas wake up 15 minutes* earlier to boil water. Hence, the habit of bathing cold water at 5.30am was already built in.
*Patient: Doctor, how much sleep is enough for me?
Doc: just 15 more minutes
That's a good one :)
Ha! Same went for me @maverickfoo. But I never take cold showers once we can afford a heater at home. The difference is that now it's a conscious choice to take cold showers.