Most sports involve contact so the possibility of striking your unprotected head is high. Wearing a mouthguard cuts concussions down, the jarring of jaws causes concussions.
Mild head injury is called concussion
intracranial injuryTraumatic Brain injury is usually called just that, unless it affects only a portion of the brain. In example, Broca's Aphasia, or difficulty in speaking, has been associated with frontal damage
You can get a concussion in but wresting, boxing or martial arts give the biggest risk for a concussion
It affects the way you react to things... for instance if you get a concussion and you still have "concussion like symptoms" and if you get hit again and get another concussion that's some serious brain damage... they are trying to help keep everyone safe in the sports industry.
A concussion is an injury to the brain when it hits the skull after a hard hitHumpty Dumpty got a concussion when he fell off the wall. :)I'm afraid he might have a concussion.