Why do humans procrastinate?
There was a recent highly cited paper describing the concept of willpower as a measurable, physiological, depletable quantity, strongly affected by glucose levels:http://www.fed.cuhk.edu.hk/~lchang/material/Evolutionary/Bra...And there was a very interesting Metafilter thread from a few years ago that found that a small amount of alcohol overcame procrastination:http://ask.metafilter.com/22924/Why-does-alcohol-overcome-my...It's probably time to start studying these kinds of things as genuinely biological phenomena.