We know that heat flows from a hotter to a cooler body.
What will result if the same concept is applied to the human body?
The heat distribution in the human body can be studied by constructing human thermal models (as mentioned in this thesis which gives a good introduction) that account for blood flowing in the core of the body Vs blood flowing to the skin. We know that most of the body heat is dissipated at the skin surface via perspiration (ref.). This helps to keep the skin cool. Heat from within steadily flows to the skin and is removed by sweat. So, we have a school of thought that accounts for flow of heat from the core to the skin. But have there been any thoughts of the flow of heat from the surroundings (e.g., air) to the skin?
When heat reaches the skin from outside as well as from the body’s core, what happens?
Where does the heat go? Into the fat?