Re: why does my body temperature increase dramatically after I eat?
This is a fairly easy explanation and there is no cause for alarm.
When your body ingests food, it goes first to the stomach, where HCl and pepsin work together to break down food. As the food is broken down, heat is released from the breaking of the chemical bonds in the food. Chemical bonds are comprised of energy and when broken, the energy must go somewhere. So it leaves as heat energy (it's called enthalphy in physics). The heat is transferred throughout your body and therefore you notice a raise in overall body temperature. Additionally, hydrogen bonding is formed between your stomach fludis, which has a lot of HCl and the new compounds or particles from the food you just ate, which also releases energy.
It's the same principle here. If you mix a lot of baking soda and a lot of vinegar in a glass jar, you can feel the heat on the glass jar. This is from the chemical reaction and formation of hydrogen bonds and subsequent release of energy heat from the acid/base reaction.