This document lists 5 foods that can increase brain activity: 1) Caffeine from coffee, tea, and energy drinks can stimulate energy and get the body moving. 2) Blueberries help protect the brain from oxidative stress and may reduce conditions like dementia and Alzheimer's. 3) Fish is essential for brain function and development. 4) Whole grains contribute dietary fiber and vitamin E, reducing cardiovascular disease risk. 5) Desserts maintain the health of small blood vessels and connective tissue.