This document recommends 5 healthy snacks to boost brain function. Apples contain quercetin, an antioxidant that protects brain cells. Broccoli provides vitamins and minerals like calcium, potassium, vitamin A, vitamin C, and vitamin K that support brain health, eyesight, heart and muscle function, and cognitive abilities. Chocolate contains stimulants that can enhance focus and concentration. Grapes may improve communication between brain cells. Blueberries are good for short-term memory.