This is a challenge for you to do next time your in the shower! 1. Get in the shower and make the temperature of the water a good temperature! 2. When ready, step out of the water and make the water very VERY cold! 3. When ready step under the water fully for 10secs and then turn the hot water on WHILE STILL STANDING UNDER THE WATER! 4. Enjoy the hot water! Comment when u have finished and tell me if u liked this or not! thanks!