i won't talk no more. >> narrator: while segregation is hard on many inmates, diontray jackson now usesthere to do what he does best. build more muscle. during his time in general population, jackson was known for his extreme workout methods and staying fit for the fight. >> people see a weak spot, you know, they come for you. got to learn how to use your hands. ain't no guns in here. >> narrator: and it was, in fact, a fight that landed jackson here. >> little altercation. you know. came out. nobody hit me. i hit them. and they brought me down here for assaulting another inmate, 15 days, you know? you got to stay in shape. you got to stay militant. you got to stay alert. because anything goes. i learned how to protect myself. >> narrator: though jackson stays in peak physical condition, he says he's as much a lover as he is a fighter. >> these are my letters i got this morning, my love letters from my wife. she's always sending me beautiful encouragements, keep me motivated, keep my mind from being inside these walls. i love her to death. it's like her words are right here with me. of