If you want a favorable decision from a judge pray that you get a hearing early in the day or straight after lunch. In similar fashion you shouldn’t be making investment decisions on an empty stomach. In the parlance, such arbiters of justice and seekers after profit are suffering from ego depletion; although we might perhaps just say that they’re hungry.
Anyway, ego depletion seems to have a real effect on our ability to make important decisions: we’re more likely to be decoyed, to procrastinate and to compromise over our decisions when we’re low in energy. So this explains why Warren Buffett is such a good investor; it must be down to his addiction to Cherry Coke. Surely?