Simple one really. I recently had to work all night before a big meeting to prepare things. Ok I didn't have to, it wasn't my responsibility, but I didn't want our company to suffer for other people's mistakes. Anyway, I was well aware afterwards that what I needed was sleep not food, and I've no problem with that as the ideal response to some unexpected hormonal imbalance. However, while sleep may be the most important thing, it's not always practical for many people to sleep whenever and wherever they choose.
So my question is this. Is there an argument for shifting to carbs to maintain brain function in this 'critical' situation, which is what my body seems to suggest is necessary if I'm not allowing it to sleep? I had steak in the fridge but while I wanted to eat it, I felt like it would be too much hard work. Would I be better off fasting to conserve energy and maximise output - if you can't think of anything good to eat, don't eat anything at all? What do people find works best when the 'natural' (ie. sleep) solution isn't immediately available?