If you’re feeling abnormally exhausted, you may need to pump some iron. We’re not talking about lifting weights, here—we’re talking about a critical nutrient for energy and cell health. Iron helps us transport oxygen, so if we’re deficient, we feel sluggish, have weaker immune systems and can suffer bruising, hair loss, pale skin, coldness, fast heartbeat, dark circles under the eyes and muscle cramping.

To up your iron intake, go for lentils, kidney beans, fortified cereals, leafy greens, lean meat and watermelon. You’ll be feeling peppier in no time, and say goodbye to that pale skin and those dark circles under your eyes, too!

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