[sethjgore]

That is for certain! Some of my best days are often just one large early dinner, and nothing all day except lot of fluids and sleeping on six or seven hours. There's something synergetic about not sleeping way too much and not eating that awakens the inner "animal" and keeps the mind alert.

[agumonkey]

I think so. "Alert" is probably the proper idea, when you're hungry but cannot eat, your brain will seek satisfaction elsewhere, and all this mental energy can be channeled into another activity (a bit like how people get very very active for a few days when they stop smoking cigarettes)

[bear141]

I have a theory that our natural state is “hungry”. We haven’t evolved past a time where getting enough food to be “full” would be a pretty rare occurrence. Everyone’s obsession with being perfectly comfortable at all times is why such an incredible amount of people die of obesity and its comorbitities every year in America.