Beet juice consumption de-stiffens blood vessels & lowers workload on the heart due to high nitric oxide production.

FTA:

Athletes who down beet juice before exercising to increase blood flow and improve performance may be surprised at the results of a recent study. While beetroot juice rich in nitrates did not enhance muscle blood flow or vascular dilation during exercise, researchers found that it did ‘de-stiffen’ blood vessels under resting conditions, potentially easing the workload of the heart.