Abstract: Reactive oxygen species (ROS) are associated with aging and disease. Increases in ROS are seen after strenuous exercise. The consumption of anti-oxidants reduces ROS levels. Many recovery drinks contain anti-oxidants to help reduce post exercise inflammation. The thought is this helps to speed up recovery from strenuous exercise. Recent research has shown that supplementing with anti-oxidants can actually negate the training effect. In this presentation we will weigh the evidence for anti-oxidant use in recovery supplement studies.