David Marlin, BSc, PhD, is an equine respiratory and exercise specialist and holds positions at universities both in the United States and in the United Kingdom. He has published more than 200 scientific papers and book chapters. David’s other affiliations and positions include member of the editorial consultants’ board of the Equine Veterinary Journal, Chairman of the International Conference on Equine Exercise Physiology (ICEEP) and editor of Comparative Exercise Physiology. David Marlin also works in a professional capacity with riders, owners, and trainers in all equestrian sports, including racing, and he was involved in the lead-up to the Beijing Olympics. His recent projects have included a review of the effects of temperature on horses during transport for DEFRA, investigation of welfare in Endurance racing for the FEI, development of testing methods for equine boots and a study of the health and welfare impact of long distance transport to slaughter in Europe for World Horse Welfare.