the mechanical process of processing calories into heat

Question

How do we mechanically burn calories into body heat.

In: 2

Answer 1

Simply put, no process is 100% lossless (except for a few oddities like superconductors that are neat science but often have little practical use). Chemical processes, muscle contractions, etc. all lose some of the energy put in as a result of this fact. In engineering, we usually want to avoid this, but in biology, it can be very useful. This is also why you shiver when you’re cold. And well, that takes energy, which we measure in calories.