"When a friend asked me why I was willingly heading into solitary confinement, especially since I had never meditated before, I told her I wanted to break my brain and put it back together again. “I need to defrag my hard drive,” I quipped. “It isn’t running efficiently.” I compared it to hiring a personal trainer to help me at a first-ever gym session."
https://na.prison.dhamma.org/en/
"In the United States and Canada, Vipassana Meditation courses are taught within prisons and other correctional facilities. Vipassana, which means to see things as they really are, is one of India’s most ancient techniques of meditation. Prison courses are held within the walls of the facility and have the same structure as courses offered to the public at our established meditation centers around the world. These courses follow the tradition of Mr. S.N. Goenka, in which an introduction to Vipassana is taught through an intensive, silent, 10-day course. Courses are available to anyone interested in learning the technique."