This seems (externally) similar to the idea of drinking lots of water so that you'll have to wake up to take a piss - except here it's being hungry that's wakin

This seems (externally) similar to the idea of drinking lots of water so that you'll have to wake up to take a piss - except here it's being hungry that's waking you up. My problem with sleeping, though, is falling asleep - I can wake up when I need to with sufficient alarms, but getting to sleep when I need to can be tough. There is one time when I have trouble waking up, though - after flying. However, I tend to take day flights, and doing this would end up with a day of my fasting in a widebody air plane, which would take an already-unhappy me to a whole new level.