Since the late 1970's, the main focus of prisons has been punishment, not rehabilitation. It's hard to believe, but you would be hard-pressed to find a meaningful violence-prevention class in a federal or state penitentiary. And 'we the people' are footing the bill to keep these folks imprisoned. It costs on average $46,000 a year to keep an adult incarcerated in California and about the same for New York State.

If you are deeply connected with yourself, with your energy, staying awake to yourself in the moment, other prisoners tend to leave you alone.

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.

Childhood is so important. Without a loving one, you're vulnerable throughout your life. We're all the things our parents are - the good and the not so good. Thankfully, I have a wonderful wife who's a brilliant mother.

Yoga class is intimate even just from the standpoint of taking off your socks. Exposing your bare feet can be a big deal. You may be an African American next to a Caucasian or a Latino. But once practice begins and we drop in, separation dissolves.

I'm not fearful by nature, but I am vigilant. When you walk into a prison, it's important that a sixth sense kicks in.

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