The British Medical Journal recently investigated the sports drink industry. Lindsay Abram explains why the beverages might not work as advertised:
The European Food Safety Authority upheld the claims that sports drinks hydrate better than water and help maintain performance during endurance exercise — but added that this did not apply to the ordinary, light exerciser. Says Tim Noakes, Discovery health chair of exercise and sports science at Cape Town University, "They are never going to study a person who trains for two hours per week, who walks most of the marathon — which form the majority of users of sports drinks," and the majority of people at whom sports drinks marketing is aimed.