America has always been a go-go country. We thrive on pressure. Seem to like long workdays and tight schedules. The more things tugging at us, the better. Or so it seems. Fact is, and it's something you already know, we don't eat as smart as we work. We use up nutrients faster than we can consume them, and we make up for it by bolting down lunch on the run at all the worst places. But becoming deficient even in just one essential vitamin or mineral can affect the metabolic pathway that produces optimum efficiency and performance.