inside the sheriff al cannon detention center, inmate exercise is limited to what can be done in open-air rec yards. technically, inmates are not supposed to exercise anywhere else. though it s the type of minor violation some officers might let slide if it s not causing a problem. but today, a pair of cell mates has kicked it up a notch. for all you workout lovers, you re going to love this. david ratliff jr. and joshua adahar have used a ripped-up mattress cover, blankets, water bottles, and a canteen box filled with books to create their own weight machine. you all ready? this is the bowflex in prison. try stuff like this. while the workout rates highly on the creative scale, it doesn t take long for staff to spot the goings-on. and the gym is about to go out of business. turn around for me, put your