When after the Imam was arrested on the night of June 5, 1963, and taken to Tehran, for nineteen days, he was kept at a secret location and thereafter taken to a solitary confinement cell for 24 hours. The Imam himself would state that the length of the prison cell was four and half steps long and he would walk across the cell three times daily, each time lasting from half to three hours as was his normal everyday routine.[1]
[1]Discipline even in solitary confinement: Mahmud Borujerdi