. >> bill hankins, a long-term inmate at colorado state penitentiary knows about sudden explosions. during a routine strip search, hankins snapped. >> i used to get real frustrated behind these doors. it used to drive me to where i'd be worked up, ooh, wanting to get out. >> hankins is serving life without parole for killing a grocery clerk during a robbery. in this super max facility he is not allowed contact with other inmates, but he is released from his cell for an hour of daily solitary exercise. it's what keeps him going. >> being locked down every day for 23 hours a day and coming out in a little room to work out, you know it was difficult first couple of years, but then i realized, you know, i'm just giving myself high blood pressure. >> while "lockup" crews have shot dozens of workout routines, the strangest has to have been at the miami-dade county jail by two inmates who covered their faces to remain anonymous. >> with the arm right here, and the chest. i'm a trainer. you know? i got him this big. >> after a round of what they called bed lifts, they showed us how they do