Unless you somehow burned through all your carb stores before bed you're not going to be burning much fat while you sleep. Plus sleeping itself burns very few calories so don't expect to be melting away pounds by sleeping.
and besides, who cares if you're hungry when you go to bed, you're asleep!
I think you hit on the biggest reason why this so-called diet works. People don't notice their hunger when they're asleep and thus less likely to cheat.
Unless you somehow burned through all your carb stores before bed you're not going to be burning much fat while you sleep. > Explain ketone levels increase in the morning regardless of nightly meal composition
Plus sleeping itself burns very few calories so don't expect to be melting away pounds by sleeping. > Exercise causing EPOC can be used in conjunction to reduce energy efficiency, increase energy loss as heat etc etc. You can alter BMR/RMR if you try.