I’ve never noticed this before but clement had a coach warming the substitutes up on the touch line during the game, quite interesting And maybe an example of Clements attention to detail
It happens at loads of clubs because players tend to do the littlest possible while warming up stand watching the game instead of loosening the muscles the fitness coaches make sure the warm up is done correct
I remember Boyd mentioning at half time during our Scottish cup Semi hammering against the Saville's way back in 2017.
Their players at half time had a coach keeping them warm and keeping them sharp, while every one of our squad were in the changing room for the team talk. It's never changed.