Every morning after waking up I go straight to the shower, turn on cold water, and stay under for 2-3 minutes. The cold shower helps me wake up, trains my willpower, and gives me an energy burst for the rest of the day. This story is about how I got there.How it all startedWhen I was eight years old, I took Jeet Kune Do martial arts classes in my neighborhood dojo. The instructor was a friend of my parents. One day he mentioned that pouring a bucket of cold water on your body after the shower...