I&#x27;ve found that sticking to a regular schedule causes your body to adapt. You get hungry when you expect food.<p>Personally, if I don&#x27;t eat in the evening, I get tired and want to go to sleep, so I&#x27;ll turn in at 9pm or so and then I&#x27;ll get up at 2am and won&#x27;t be able to sleep until 5am. Whereas if I eat, I&#x27;ll stay up to 1am or so, and then sleep until 8am. Food primarily affects how much energy I have. More food, more energy.