I've always been a fan of taking warm to hot showers, but after I joined the local police school where I work! I learned that cold water baths are disciplinary, one because they eliminate anxiety, affecting the central nervous system, releasing endorphins and giving a feeling of relief of conscience. The law of developing and preparing the body to deal with stress also combats depression and muscle inflammation. Most elite troops in the world's military develop the technique of placing recruits in the cold to develop the body's resilience to stress. I spent hours in the freezing pool with ice during my police training, and today I have swapped the hot water bath for a cold one, just a shower.