It's difficult for the average person to appreciate the fanastic achievements of top athletes.
For example, the world long(broad )jump record is 29ft 4ins; now, I challenge any one there to measure out that distance and not think that it would be totally impossible to jump that far.
Here's another one. If you go to a gym, get on a treadmill and set the speed at 11 mph; now I would be very surprised if hardly any woman - and very few man - could keep running at that speed over more than a few minutes.
Well, top female distance runners could run at that speed for 26 miles(marathon distance). It's mind boggling!