Support WBURCaffeine Gives Endurance Athletes A Third And Fourth WindPlay03:34Download AudioMurray CarpenterNovember 19, 2012 ShareLast month, triathlete Sarah Piampiano competed in the Ironman World Championship in Kona, Hawaii. Piampiano and many other endurance athletes are relying on caffeinated gels in their races. (Murray Carpenter for NPR)
