Reminds me of a Seinfeld episode where Kramer decided he'd wash his greens while showering . . . Lol.

I read on an alternative health site that a few people had success with showering in very cold water. The 1st post was from a guy in the UK whose hot water heater quit and he was forced to take cold showers for few days. Inexplicably, his depression went away. A few other posters then tried and had success as well. Also, some other health benefits.