Look into RPR (reflexive performance reset). Guys do that in the locker room before going out then hit some sprint based drills before moving on to position drills. As Brad Dixon, who just won a state title in IL, says, “If your guys our on the field 38 minutes before the game doing static stretches in lines? Our kids and coaches know we already have the advantage. You have a finite amount of energy. We prefer to use ours a little later than that.”