Happen Quote by Calvin Johnson

Guys go through concussions sometimes that aren't as noticeable. But they know - the player knows - and they want to go back in…

— Charles Woodson

Concussions are still kind of a mysterious thing.

— Sidney Crosby

I think the one thing I can say is not to play through concussions. I think that's unwise.

— Chris Borland

Every concussion is a completely different kind of injury.

— Dan Hooker

But now there are more concussions due to not being used to the hard hitting.

— Jim Otto

I understand the seriousness of concussions.

— Peyton Manning

Concussion? How the hell can they tell? They're *football* players, for chrissakes!

— Dennis Miller

Yeah, I think anyone who plays the game for any length of time will pick up a concussion or two or three. I did.

— Oliver Luck

For me it's pretty simple to diagnose concussion on a football pitch. If there's any doubt about it, then in my eyes, they should…

— Ryan Mason

After enough concussions the head injuries blur together.

— James Nicoll

I'm concerned about the future of football, because we have paid a lot of attention to concussions. We are more aware of concussions. But…

— Ann McKee

You're not going to eliminate concussions. Anytime you hit your head, you have a chance of getting a concussion, in any sport, too. I…

— John Madden