The code that most prisoners live by is an extension of the masculine roles they were taught growing up, how they were conditioned about what it means to be a man: you've got to be strong, you've got to be tough, you've got to be in charge.

Intense asana practice - too much, too soon - can have detrimental effects. It can also promote a dissociation from the personal sensitivity and self awareness that I am trying to encourage. I don't want to contribute to furthering physical or psychological trauma.

I teach that the foundation for our practice is being able to go inward and disconnect from the busyness of our thoughts, that focusing the mind on bodily sensations and breath will ground us in the present moment. Yoga is about realizing who you really are, aside from your persona.

You will surely smile with me when I say, 'Thank God one can still recognise self-pity as such and not give it any greater dignity than just that.

It is the absence of hope, which equals the despair that is the punishment.

When I teach a new group of students, I introduce some yoga philosophy, but I don't overload them with information. Just enough so they understand the real tradition behind this ancient practice and that it's not a stretching class. Guys come in and they're a little nervous. I tell them that when they cross the threshold of the door, they're crossing to a different dimension. They're moving from an externally-oriented reality to an internally-oriented one.

There's often an assumption you're more privileged if you belong to a family with people who have made a success.