i got involved in a project that is trying to provide protection against COVID in large events like football games and concerts. i have a question about what the NFL is doing about protecting football players. they are looking into incorporate N95 mask layers and surgical mask layers into the helmet face shields. so i would think that would substantially affect the player's breathing because it would increase air resistance substantially. so then the question is how much do players huff and puff during the game. i remember defense players get worn down and breathe heavily in long series when they cannot stop the offense. i just look at a game, but did not see too much of it. i am sure some of you play football. so i am trying to get a feeling from those preferably with first hand experience. 1. how much huffing and puffing would there be in a game? 2. and would having to breathe through heavy mask material like n95 be unpopular with players? thanks!