Resveratrol, a natural antioxidant compound found in red grapes and other plants, has received widespread attention for being a possible anti-aging compound and is now widely available as a dietary supplement; many claims have been made about its role in explaining the cardiovascular health benefits of red wine, and other foods.
New research in The Journal of Physiology instead suggests that eating a diet rich in antioxidants may actually block or counteract many of the health benefits of exercise, including reduced blood pressure and cholesterol. This is in contrast to studies in animals where resveratrol improved the cardiovascular benefits of exercise.