I'm pretty certain that most of us needs space, physical and mental activity and some form of creative outlet to functioning well and feel good. That's one of the reasons why I don't feel that solitary confinement in prisons is the best route to take, but I do understand that it's also a very complex issue for various reasons.

The PBS Frontline documentary "Solitary Nation" (2014) by award-winning producer and director Dan Edge gives you an insight into the work of the solitary confinement unit in Maine's maximum security prison.

The unit that never falls silent: