Gary Taubes suffered a severe concussion at age 20, resulting in a three-month headache.

“the entire time i was boxing i never thought it was dangerous i had this true mental block that was i don't get hit so it's i'm it's not dangerous like nothing's happening to me you know i'm i'm evading and i'm hitting and da da da da which of course it was categorically untrue because my style of boxing was actually to get hit tire out opponents and eventually overcome them due to superior conditioning”

“it wasn't until i suffered a very very severe concussion when i was 20 in this i still remember it very well i was actually hospitalized for two days had a ct scan had significant bruising had significant cerebral contusions and had a headache that lasted for three months i mean this was a real this was the hardest i've ever had my bell rung and it was only at that point that i thought oh my god you actually get hit in this sport”