I'm pleased the 'footballer's fatigue' myth is being dismantled on this forum. It's always mightily annoyed me.
Aside from what many everyday people do in their work - as well documented in previous posts - I would also like to draw attention to other professional sports. The intensity of training and the levels of fitness demanded by sports like boxing and cycling (yes I know there are others) really puts the 90 minute effort shown by professional footballers into the shade. In fact, even if players ran solidly for 90 minutes (which they don't) and were tackling and shooting throughout (which they don't) it would be perfectly attainable for a trained, professional athlete. I just don't get it. To think professional Grand Tour cyclists ride almost every day for three weeks, for hours at a time at a high intensity. It's all about how you apply yourself. 'Football fatigue?' What a load of ball-ocks
I will add tennis to the list of other sports, I often think pro tennis players are super humans.
Maybe tired footballers should take up cricket