Comment by csee

I don't know if it's the mental difficulty or the stress associated with the task that is causing the energy to be burnt. I'd like some clarity on that if anyone has studies.

> I feel like this is already known?

I'm not sure about that. I heard a lot of people say "exercise doesn't help you lose weight because you eat more", not "exercise doesn't help you lose weight, because it doesn't really burn calories.".