"Need a rest"!! We already play less league games than we used to in both League 1, the Championship, the old First Division and at the inception of the Premier League.
Pitches are now pristine and in top class order from from the ploughed fields of Filbert Street. The players, in general, are top athletes mostly in the prime of their lives and yet all we hear is about them being tired and needing a rest. My guess is that it is the weight in their back pockets which has become a burden to their physical fitness, hence, this suggestion. Heat and kitchen are two words that come to mind.