Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
You can immediately cool down a car that has been sitting under the sun by rolling down the window on one side and opening-closing the door on the other side 5-6 times.
23
Hot water can freeze faster than cold water.
181