4. Fruit salad

Apples, oranges, grapes, strawberries, blueberries, kiwis, the pineapple chunks from the back of the cupboard and that slightly bruised banana you don’t know what to do with. They’ll give your brain a boost of energy and fill your body with vitamins, minerals and fiber.

Plus, you can save yourself time with this snack: make a big batch and you’ll have enough for breakfast the next morning, too.