It has to do with do you understand what it is like to be exhausted after a day of physically and mentally demanding work. Not sitting in an office/clasroom/library/lecture hall but actually doing a days work.
Yes, I'm extremely aware of what it is like to be exhausted after a day of physically and mentally demanding work. And I'm 38 years old. I still can't see the relevance of aggressively attacking an opinion regarding the stamina of professional sportsmen !?
The result of a lot of games at the start of the season along with it being a very hot day. A little tiredness was inevitable. Despite that we won the game and kept a clean sheet. Fantastic result.