I started doing cold showers a few weeks ago after I was forced to take a few at my girlfriend's house (broken water heater).<p>Now I take cold to frigid showers almost all the time, it is incredibly refreshing. Doubly so after a heavy workout. Definitely one of the best accidental discoveries of my life. The difference in how I feel physically and mentally compared to steaming hot showers is stark, I do wish this were more well known.<p>I'd encourage everyone to try it once, and just dive straight in. After the few initial seconds of shock, your body gets accustomed and it starts feeling quite nice, trust :)
I still have poor-guy-brain when it comes to ac. Instead of cooling the whole house, I just take a cold shower every time I get too hot. It buys you like 20 minutes of comfort, maybe more.