Question

When you say something like "the jogger just burned 100 calories" of energy, what does that mean? where exactly do those 100 calories come from? in other words, what form of energy is depleted by 100 calories? hint: this is as much a biology or chemistry question as it is a physics question?

Answer 1

The jogger stored up calories from the foods he eats which makes energy and could be used and something like running and when he says that the "jogger" just burnt 100 calories of energy hes using the calories that he just got from food to run and far as he did.