One night of inadequate sleep (4-5 hours) reduces prefrontal cortex activity by 10-20% and increases cravings for addictive foods by 25-30%.

“After one night of inadequate sleep (4 to 5 hrs): + PFC drops by 10-20% (self-control) + a hyperactive 25-30% increase to eat addictive foods”

“the Centers of the brain that keep your hedonic desires in check and it's a part of the brain that we call the prefrontal cortex that part of the brain was actually taken offline by sleep deprivation and that led to the more primitive areas of the brain regions such as the amygdala for example that just erupted in terms of its hedonic response to desirable foods”