Usain Bolt is the fastest recorded man in the world, but right before he competed in the 100-meter sprint at Rio’s 2016 Olympic Games, Bolt traveled to Germany to visit his long-time doctor, Hans-Wilhelm Muller-Wohlfahrt, affectionately nicknamed “Healing Hans” for help. Bolt had sustained a mild hamstring tear that forced him to pull out of the Jamaica National Senior Championships. The treatment proved successful; the Jamaican brought home gold.