But the consequences of these seemingly small concussions can be far-reaching, leading to financial problems, job losses, divorce and mental health issues.
There have been smaller concussion-related changes on the conference level, where the Big 12 this year mandated that medical officials, rather than coaches, determine when athletes return to play following suspected brain injuries.
'Sort of Like A Small Seizure' Concussions in contact sports have been around since the first pugilists and wrestlers began competing thousands of years ago.
While Weatherford, as a punter, has dealt with a relatively small number of concussions for someone who has played in the NFL since 2006 -- two in his estimation -- Rice believes he has suffered as many as 20 over the course of his lifetime.
Doctors would later tell the 54-year-old Australian he had suffered concussion and a small bleed on the brain.
In contrast, concussion represented a small proportion of reported injuries.
Matthew Broderick plays a Chicago newspaper editor who has amnesia due to concussion, while his small-town uncle, Alan Alda, has amnesia due to old age.
In all, due to plane malfunctions and other snafus, 933 of the brigade's 1,700 paratroopers actually jumped, and the anticipated 50 casualties -- troopers with twisted ankles, mild concussions and other small injuries -- didn't materialize.
Fourth, while this is the largest study of high school athletes to our knowledge, the number of adolescents with four or more prior concussions was still small, and the effect of multiple injuries may therefore be subject to sample size error.
