BASIC PRINCIPLES OF HEAT & COLD. How the Body Produces Heat. All food & drinks contain Calories A Calorie is the heat value of food Calories in the body are converted to energy & stored, this conversion process produces heat, which generates our body temp.
1 lb H2O heated from 75 to 76 degrees, 1 BTU of heat energy absorbed into the H2O
(Heat is present in all matter)