What causes body heat?

Question

He gets heat in his body and at his genitals

Answer 1

When you eat carbohydrates, your body turns them into heat during oxidation reaction.

Answer 2

Body is a byproduct of energy generation and use in the body and just comes out all over.  Anywhere there is blood there will be heat transported to it.  If you did not have any body heat you would die

Answer 3

Heat is produced in the muscles and the liver. Energy conversion is never 100%. When ATP is hydrolyzed to produce work, a large portion of energy is wasted as heat. Heat is distributed by blood circulation to other parts of the body.

Answer 4

metabolism