For many, it's somewhat of a silent epidemic that is turning into a loud problem.
High school athletes are suffering brain injuries at alarming rates, and the research is staggering.
According to the Centers for Disease Control and Prevention and the National Center for Injury Prevention and Control, the number of brain injuries in teenagers is between 1.6 to 3.8 million per year.
That's far too many, say local coaches and athletes.
"It's not worth the risk anymore, with all the stuff that's coming out with the long-term effects with having multiple concussions," St. Francis High football Coach Jim Bonds said. "When you have one, you're a lot more susceptible to having another."
Research behind the concussions has provided other distressing information.
A 2005 study by the Michigan State University Kalamazoo Center for Medical Studies showed that the highest number of sport-related concussions have been reported in football.
Most recently, a 2012 study in Michigan discovered that student-athletes are at risk of neurocognitive deficits that may last for more than a year, and concluded that eliminating tackle football for players under 16 is recommended to reducing concussions.