Demetrious Johnson Says Brain Study Revealed He Has ‘Gotten Smarter’ Throughout His MMA Career
Demetrious Johnson talked about a study that showed his brain improved throughout his prime years in MMA “Mighty Mouse” previously announced his retirement Demetrious Johnson has made a shocking revelation about his brain. Older but smarter Speaking on Six Feet Under with Mark Calaway, “Mighty Mouse” revealed that he took part in a brain study