Tito Ortiz vs Chuck Liddell got us all talking about it again: when should an MMA fighter retire? In the last 10 years we've learned that brain damage in combat sports is a HUGE problem. CTE makes this retirement question even more critical because if you go beyond a certain threshold of damage then there's no coming back. For more of my thoughts about brain damage and MMA check out https://www.grapplearts.com/does-mma-make-you-stupid-impact-concussions-and-brain-damage-in-mixed-martial-arts/