My logic says, he would have eaten immediately when he found/hunted something he had learned to know would spoil quickly and store/hide whatever could be saved for later when he was truly hungry/needed the energy, so it was all circumstances. But my belief is that as a whole, we were intuitive eaters and probably still even grazed/rationed a little bit time to time, to try new things and when food rations were scarce. Definitely dependent on the weather/locale/season etc. Maybe as it got colder they also started bingeing more to put on more fat for cooler temps like animals do? Interesting none the less to try to picture it.
"Insanity: doing the same thing over and over again and expecting different results." Albert Einstein