Dr. Mark Waldron is an associate professor in Sports and Exercise Sciences at Swansea University as well as the Performance Physiology lead for the Welsh Institute of Performance Science. He has previously worked as a senior physiologist at the Defence Science and Technology Laboratory (DSTL) and as a sports scientist in professional rugby. Mark is a consultant for various elite sports clubs and institutions around the world and frequently publishes research in the area of human performance. His special interests are exercise in extreme environments, performance nutrition, and dietary supplements.