Your body's like a microwave oven
A microwave oven heats food by shaking atoms. Heat is just that: the energy of violently vibrating atoms.
Your body heats itself by shivering when its cold. The more you move, the more energy your body gives off, which translates into heat (i.e. warmer body).
So really, your microwave oven and your body work the same way.
This Halloween, I dare you to go dressed as a microwave… and tell the story I just told you.