Want to start off your day with a huge burst of energy that lasts for hours? Try taking a cold shower!
Alternatively, you can end your hot shower with a 20-30 second ice-cold finish for nearly the same effect.
Many people already do this… and I know I've heard of it before, but I didn't practice it myself until tonight.
Other people have shared some very cool comments, and I'd like to pass a few of them on to you …