Comment by Nevermark

> your body can simply take longer or less time to digest the food you put into it and extract more or less energy

Great point.

> If you're exercising more, sure, your body will make you more hungry, but it will also work harder to squeeze every possible calorie

I find when I only do light exercise, that I am less hungry than when I don't exercise. Perhaps because I get better sleep, I am less hungry.

All the dynamics are crazy.