As we’ve noted many times, the evidence linking too-little sleep and obesity continues to grow. With artificial lighting, we stay awake later and probably sleep 2-3 hrs less a night than people did 100 years ago.
Sleep deprivation is associated with increased cravings for sugar, fat, and salt. This recent study shows that when people stay up late, they eat more calories late at night, and these are often “bad” calories.
So, try to get 7-8 hrs of sleep nightly if you want to resist cravings and lose weight.