ain't no sunshine in this jail. >> there is some sunshine in boston suffolk county jail at least on thenmates are allowed out for an hour or more of rec each day. during bad weather, recreation is taken in housing unit day rooms where inmates work out any way they can. >> got to do pull-ups every day. about ten reps a day. ten sets, 100. i do my push-ups, squats. i work on the legs. >> now raise your left arm up. >> over on the women's side, some inmates aim for a mind/body connection for a more contemplative breakfast. >> reach, reach, reef with your left arm and bring the hand onto the chair. >> from time to time the jail allows a volunteer yoga instructor to conduct a class. >> grow like the tree. >> i like it. it's really relaxing and makes your day go by easier. takes away all your stress. >> 23-year-old valerie minacapelli hasn't always been so mellow. she's nearing the end of 90-day sentence for convictions that include assault on a police officer. >> i got in a fight with a girl. when they took me to the police station, they got rough with me so i fought back. i punched a lieute