[OhNoMyqueen]

It's worse than that. The body doesn't like to lose supplies, so any calories burnt by exercise will be reclaimed by the body, which means that in any case (exercise or not) you'll need to eat less than what your body asks of you.

For some people this is cancelled by the virtuous side-effects of exercising, most notably sleep quality and low stress levels, as sleep and stress are the two most important levers on hunger/self-indulgence. For some others this is compounded by a conscious decision to allow oneself to eat sizable portions (or snack) to make for the effort, which immediatly cancels the calories deficit induced by exercice, most probably with compensation, considering how few calories are burnt by standard exercise durations.