Oh yeah, by the way, we are only eating apples now. And drinking water.

Strange how this fast changes things. Like your sense of smell. It's so heightened. As if your body is saying "OK. He is not eating. Something is a miss. Lets really tune up his olfactory senses so that he can smell his way to some food."

Ditto with adrenalin. "If we keep him more tuned up, maybe he'll go out and hunt himself a pizza."

Great design, the body.