If you're about to make a pitch to your boss about a much-needed raise, Health.com recommends you consume lean protein and whole grains, plus a little caffeine.

Why?

Because you want to be alert and upbeat, and protein foods contain the stuff to increase mental alertness. Whole grains also improve energy and so does caffeine for a bit -- but more important, it can improve your attention and short-term memory. How about this menu to rev you up: An egg-white and spinach omelet, a whole-wheat bagel with low-fat cream cheese, and one or two cups of coffee? If you don't get the raise, you'll at least be primed for a spunky day.

Health.com has you covered in all sorts of scenarios. Speaking to a large crowd? A high-protein, low-fat meal is best. Trying to get pregnant? Complex carbs, protein, and folic acid are your essentials. Before a workout: A light snack with carbs and water.

There's more. Learn exactly how to eat for performance right here.