Explaining on Instagram: "The men’s 100m freestyle final has changed dramatically over the span of 88 years, highlighting just how much swimming has evolved. In 1936 at the Berlin Olympics, the gold medal was won with a time of 57.6 seconds, a performance that represented the absolute peak of human speed in the water at the time. Fast forward 88 years to the modern era, and elite swimmers are finishing the same race in around 47 seconds. That is more than a 10 second improvement in an event that