It wasn't an act of aggression or violence. Juan Gonzalez was simply acting on his protective instincts.

So often, people think of football when they discuss concussions. But Gonzalez, who's earned three varsity letters playing football, suffered a concussion by exercising caution during cheerleading practice.

He popped Sammi Olson high into the air. Typically, she would complete one full spin before landing in the bases' arms. But sectionals were less than 2 weeks away, and Olson reluctantly decided to take a shot at two spins.