Lt. Col. (ret) Mark Cucuzzella MD is a Professor at West Virginia University School of Medicine. As a US Air Force Reservist he designs programs to promote healthier and better running with the US Air Force Efficient Running Project. Mark shares his work and principles in his book Run For Your Life (Knopf 2018).He has been a national-level Masters runner, having competed for over 40 years with more than 100 marathon and ultra-marathon finishes. Mark is a two time winner of the Air Force Marathon, ran under 3 hours for a marathon for 30 consecutive years, and has a marathon PR of 2:24. As well as being the race director of Freedom’s Run race series in West Virginia, Mark is director of the Natural Running Center, an education portal designed to teach healthier running. He is also the owner of Two Rivers Treads – A Center for Natural Running and Walking in his hometown of Shepherdstown, WV. Mark’s innovative work and story has been featured in the New York Times, NPR, Outside Magazine, Running Times, Runners World, Air Force Times, the Washington Post, JAMA, and other medical and media outlets.