Head to head collisions are relatively rare. You could play an entire career without getting one. Heading the ball isn't that bad, actually, and certainly doesn

Head to head collisions are relatively rare. You could play an entire career without getting one. Heading the ball isn't that bad, actually, and certainly doesn't happen often. Players can go through a season without ever doing it. Either you don't watch much Football, or you don't watch much American Football. One only needs to watch a few games of each to see how violent they are. American Football has dozens of people smashing into each other (often head-first) every minute of the game.