Have you ever experienced gut issues during training or racing from a product that was supposed to help you feel better? We know that proper fueling during and after endurance performance and training is crucial, but what exactly do our bodies need, when do they need it and why do they need it. Enter Dr. Art Zemach and Tailwind Nutrition. Dr. Zemach is a pediatrician, kayaker, and endurance athlete who has competed in Ironman Switzerland, Leadville Trail and other endurance competitions and offers cutting edge information about optimum nutrition for endurance athletes.