Mark is a neurometabolic and neuromuscular disease clinician-scientist with strong interest in the benefits of exercise and nutrition for muscle disease and mitochondrial genetic disorders, aging, athletes and obesity. He has published over 570 peer reviewed papers and has an h-index of 149. Mark is the founder and CEO of Exerkine Corporation / Stayabove Nutrition, a biotechnology / nutraceutical company developing therapies for health-span optimization, obesity / body composition support, muscle / mitochondrial disorders and sport/military. He was the co-founder and CSO of Life Science Nutritionals.