“Drinking a beetroot juice supplement before working out makes the brain of older adults perform more efficiently, mirroring the operations of a younger brain, according to a new study by scientists at Wake Forest University.”
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Meredith Petrie et al, Beet Root Juice: An Ergogenic Aid for Exercise and the Aging Brain, The Journals of Gerontology Series A: Biological Sciences and Medical Sciences (2016). DOI: 10.1093/gerona/glw219