https://www.scientificamerican.com/article/getting-more-sleep-can-reduce-food-cravings/

Have you ever noticed that you feel hungrier or have uncontrollable cravings for certain foods after a poor night’s sleep? It’s not just your imagination—there’s a link between sleep and hunger.

Studies show that even a single night of sleep deprivation changes the levels of our hunger and appetite hormones, leading to increased hunger. It also affects the way your brain’s motivation centers respond to the sight (or even the thought) of food.