Alex McDonald

PWN Member, KetoMarathons

Alex McDonald is an advocate for metabolic health who challenges long-held beliefs about nutrition, energy, and human performance. In a bold personal experiment, he became the first person in the world to complete five marathons in five consecutive days while fasting—despite never having run a marathon before. By testing ideas most people only debate, Alex explores the untapped power of metabolic flexibility and the courage required to challenge conventional wisdom. His story inspires audiences to rethink what the human body—and mind—are truly capable of.