There's a way for prisoners to earn extra credit for behaving well and participating in things like educational, religious or job training programs that could help them get out sooner.
The nation is holding Alexey Navalny in a detention center though according to Navalny's lawyer and Russia is apparently planning to transfer him to a penal colony, a remote settlement for prisoners.
But the VR therapy seems to be working, and Dr Sanchez-Vives reports more and more of the prisoners successfully reintegrating into their communities after their release from prison.