That would explain a lot.
Via The Hill:
President Obama said Thursday that he may have suffered from mild concussions while playing football in his childhood.
“When I was young and played football briefly, there were a couple times where I’m sure that that ringing sensation in my head and the needing to sit down for a while might have been a mild concussion, and at the time you didn’t think anything of it,” Obama said at a White House event designed to highlight the risks of sports-related brain injuries.
Obama said his experience was common and underscored the need to “change the culture” around concussion injuries in sports, in which athletes are told to “just suck it up.”
“The awareness is improved today, but not by much,” Obama said. “So the total number of young people who are impacted by this early on is probably bigger than we know.”