Relives Depression: I recall in seeing in one of the James Bond Movies after a dangerous fight the actress then goes to the bathroom for a cold shower, it helps you get back to your senses and relieve depression.
Enhances blood circulation: Cold water ensures that your organs produce enough heat to keep the body warm.
Energizes: Cold shower reinvigorates me, after every cold shower, I feel positive and energised to conduct more tasks than planned earlier.