Watching Bell from the Steelers get his helmet knocked off and concussed made me think. Are concussions more likely to happen in the running game or passing game? It seems like dudes get laid out more in the passing game (idk for fact) yet the NFL is turning to a more pass happy game. There aren't defenseless players in the run game you have violent collisions but not to the extent of passing plays.
Maybe I'm seeing the game wrong or different tho just a thought
Remember the NFL is a fast paced league where collisions of any kind are inevitable. When you have athletes running at full speed doing anything to make the tackle or get those extra yards, awkward angles happen, and with that, the possibility of major injuries, including concussions. Physics alone won't allow you to hold up and put your head in a way to avoid accidental head-to-head contact. This is what young football players consider before they consider a college or NFL career.
The best these league can do for them is to curb guys that intentionally lead with their heads without wrapping up. In fact, they even said runningbacks cannot lead with the crown of their helmet anymore while carrying the ball,
http://bleacherreport.com/articles/...ses-ban-on-helmet-crown-hits-by-running-backs
so they are looking into preventing concussions in the running game as well.
The only thing I can say is that the NFL is considering safety in all parts of the ball, sometimes to a fault (seriously, they need to make those personal foul penalties reviewable plays already and also work on penalizing intentional dive tackles to the knees that can cause debilitating leg injuries), and that hits to the head will happen, and not necessarily on purpose. Passing plays get flagged more because they are more isolated situations where everyone sees, but some running plays can see the same hits, especially on the open field or ones where the player comes from the side, but only a few times when running in gaps.
The best thing to do is to reinforce keeping your head up in every play like they always teach in younger ages and acknowledge that football is a game of momentum and that momentum can put the body in odd positions where players cannot brace for anything.