“The grass and goals are spinning when I stand up. My vision is laced with black spots. It is alarming, but I make an athlete’s calculus, measuring these symptoms against the need to show some grit to this skeptical audience. After a brief break, I rejoin practice. Passes and players ricochet past me and I can’t get anywhere quick enough. I can’t read plays as they unfold. The black spots linger. I’ve slammed my brain hard against my skull.” We hear a lot about concussions in football. But they happen in a lot of sports. Here’s Aeon’s Rebecca Ruiz: Soccer Broke My Brain.