Whole-grain cereal and low-fat milk is the ideal way to start your day on all cylinders or to refuel after a workout. Not only does it serve up an energizing mix of protein, fiber, and slowly-digested complex carbs, it’s ready in less than a minute. For even more muscle, choose a cereal that’s been fortified with iron, a mineral we need to form hemoglobin, which delivers oxygen throughout our bodies. And don’t forget to add in some sliced strawberries. Their vitamin C will help you absorb even more of your cereal’s iron.