In a career spanning 15 years, Patrick McKeown has since also become a bestselling author and expert on optimal breathing for improved health, well-being, and fitness. His book ‘The Oxygen Advantage’ is based on four years of scientific research and tailors breathing exercises for anyone seeking to improve their fitness and sports performance. ‘The Oxygen Advantage can revolutionize how we train by addressing dysfunctional breathing patterns and simulating high altitude training through specific breath-holding exercises as devised by Patrick.