Do you have any medical qualifications or research to back up this up?
Same as mine, PhD in Hindsightology, doesn't the prima facie evidence suggest that this is a prerequisite for posting on this forum?
My two penn'orth. I thought it is now received wisdom that Justin, Tielemans, Maddison and in a way Schmeichel were/are being "flogged" because they love playing and thrive on competitive matches. I've never seen this mentioned, but I presume each player's training and conditioning is calculated in some way as the combined total of training and playing.