Jonathan Gottschall's career as a college English prof was on the rocks, and he was desperate to do something completely different. So in his late 30s he left the classroom for the cage, taking up mixed martial arts and training for an amateur bout. It was more than a mid-life escapade, though. Jonathan had some unresolved issues around bullying in his own youth, and wanted to better understand the relationship between violence and masculinity, including his own. We talked about MMA, male aggression and Jonathan's book "The Professor in the Cage: Why Men Fight and Why We Like to Watch," as well as his ill-fated stint as a literary scholar with an evolutionary bent.