Sleep helps us make better food choices

Poor sleep is linked to overeating, especially the overconsumption of fat and sugar rich processed foods. The two hormones that help regulate hunger are ghrelin (which stimulates the appetite) and leptin (which decreases it), and both are affected by sleep. When the body is sleep-deprived, the level of ghrelin rises, while the level of leptin falls, leading to an increase in hunger. On average people who don’t get enough sleep eat twice as much fat and more than 300 extra calories the next day, compared with those who sleep for eight hours

So not only does a lack of sleep interfere with hunger signals, but there’s also the problem that less time in bed simply gives you more hours of the day to eat