>I overhear one particularly worrying account from a fighter talking about receiving a head blow from a pole axe: “My right vision completely went; there were s

>I overhear one particularly worrying account from a fighter talking about receiving a head blow from a pole axe: “My right vision completely went; there were sparkly lights and stuff. I spent a week in a brain-fog haze, walking around like a zombie.” This sport sounds like a great way to earn a concussion and acquired brain injury.