For cleansing and disciplining mind, Yoga and meditation classes were started in a big way with the help of various voluntary organisations. In the year 1994 Tihar Jail created a history by organising a Vipassana Meditation camp for more than one thousand prisoners. Since then a permanent Vipassana center has been opened in Tihar Jail No.4, where two courses of ten days duration are organised regularly. In the year 1998, Sh. Satya Narain Goenka, teacher of Vipassana, inaugurated "Pagodas" meditation cells in the center. Staff members are also encouraged, to attend meditation courses. Meditation groups like Brahma Kumari Ishwariya Vishvavidyalaya, Divya Jyoti Jagriti Sansthan, Sahaj Yoga Kendra have also opened their branches in Jails for imparting moral education, counseling and techniques of meditation to the prisoners. This has helped many prisoners in changing the whole approach to life.