Mayo Clinic Minute: Human endurance - will there be a 2 hour marathon?

Is it possible for someone to run a marathon in less than two hours? Dr. Michael Joyner has been studying human performance since medical school. He says in the 70s and 80s … … which is how much of the athlete's engine capacity can be used and for how long. So far, the record is 2:01:39. Dr. Joyner says if, during a race, all conditions are right. More health and medical news on the Mayo Clinic News Network. https://newsnetwork.mayoclinic.org/ Journalists: Clean and nat sound versions of this pkg available for download at https://newsnetwork.mayoclinic.org/ Register (free) at https://newsnetwork.mayoclinic.org/re...