In his acclaimed national bestseller, A Fighter's Heart, Sam Sheridan takes readers with him as he steps through the ropes into the dangerous world of professional fighting. From a muay Thai bout in Bangkok to Rio, where he trained with jiu-jitsu royalty, to Iowa, where he matched up against the toughest in MMA, Sheridan threw himself into a quest to understand how and why we fight. In The Fighter's Mind, Sheridan does...