Carolina quarterback stays in the game despite absorbing several head shots.
Although rugby has less padding, the technique makes the game safer.
The 30-year-old retiree has no idea how much brain damage he suffered in the NFL.
Will concussions cause more football players to quit?
Scott Sterling is a volleyball legend thanks to blocking shots with his head.
The bizarre logic argues that injuries affect everyone differently.
On Tuesday, the league office showed symptoms of head trauma.
The famous agent has plenty of projects on tap, but there's one story from his past we had to ask about.
The doctor portrayed by Will Smith would bet his medical license on it.
Here's what Ronnie Hillman has to say about 'Concussion.'