A teacher of exercise biochemistry, sport nutrition and ergogenic aspects in sport for 17 years, Mougios served on the Scientific Committee of the 2004 Pre-Olympic Congress. He has co-authored many articles in international scientific journals and has performed research on muscle contraction, exercise metabolism, biochemical assessment of athletes and sport nutrition. Mougios is a member of the American College of Sports Medicine, the American Physiological Society, the European College of Sport Science, and the New York Academy of Sciences and Index Copernicus Scientists. He serves as a reviewer for the Journal of Applied Physiology, the British Journal of Sports Medicine, the European Journal of Clinical Nutrition, Acta Physiologica Scandinavica, Annals of Nutrition and Metabolism, and Obesity Research. In his leisure time, he enjoys cycling, hiking and photography.