Mário Sá is a Ph.D. student in Health Education at the University of Lisbon, Faculty of Human Kinetics. He holds bachelor's and master's degrees in physical education. He has been a physical education teacher and a personalized trainer for 15 years, a police officer for 19 years, and an elite police officer of the close-protection unit of the Portuguese Public Security Police for 16 years. His main research interest is health promotion and education, physical activity, fitness, and physical education, combined training, and all associations with elite police officers.