Usain Bolt is the fastest man on earth, running 100 meters in nine point five eight seconds. The Jamaican sprinter isn't the only one breaking records - we see athletes of all kinds pushing themselves in unimaginable ways in pursuit of glory... but have we, as humans, reached our limits?
Mark McClusky sets out to answer this in his new book "Faster, Higher, Stronger: How Sports Science is Creating a New Generation of Superathletes and What We Can Really Learn from Them."
Mark will also be talking about his book on Monday, December 8 at Red Bull headquarters in Santa Monica.