Darren Burke, PhDPhD, Exercise Physiology · Sport scientist · Sep 30, 2026
Playing on after a hit to the head doubled recovery time.
In a study of young athletes with a sport-related concussion, those who kept playing took 44 days to recover on average, versus 22 days for those removed from play right away. They were 8.8 times more likely to have a recovery of 3 weeks or more. The athletes were adolescents, but the lesson travels: finishing the game can cost you the next month.
Darren Burke, PhDPhD, Exercise Physiology · Sport scientist · Sep 30, 2026
Most repeat concussions happen within 10 days of the first.
In the NCAA Concussion Study of 2,905 college football players, 12 had a second concussion in the same season. 11 of those 12 (92%) happened within 10 days of the first. The brain is most vulnerable in that window, which is why coming back early is the risky part.
Darren Burke, PhDPhD, Exercise Physiology · Sport scientist · Sep 30, 2026
Most concussions never get reported.
In a survey of 1,532 high school varsity football players, 15% said they'd had a concussion that season, but only 47% of them reported it. The top reason, given by two thirds: they didn't think it was serious enough. That's exactly why the locker asks anonymously.