#7 is crap. if it were true, we’d see more FG records longer than Prater’s 64 yarder as an example. The air has less oxygen, making it a tad more difficult for people to get oxygen into the blood. Good for the Broncos, since they’re used to altitude. Sucks for the Pats. Visiting teams have to acclimate to altitude changes, so they’d theoretically get tired easier since they aren’t used to the lower oxygen levels.