8 Foods and Beverages That Will Keep You Alert and Focused Slideshow

Apples contain high amounts of fiber and natural sugars that breakdown slowly in the body, releasing a steady stream of glucose into the bloodstream and providing the body with a consistent source of energy. Research showed that apples improve neurological health because they contain quercetin, one of two compounds found to reduce inflammation of neurons. Another study published in the Journal of Alzheimer’s Disease connected the consumption of apple juice to an increase in an important neurotransmitter, acetylcholine, which has been found to improve the memories in mice with symptoms of dementia.