Like most of us, Arthur Klein woke up on the morning of September 11th, 2001 to the horror of the collapsing Twin Towers. Klein, who lives in Santa Monica but grew up in New York, was particularly shaken since he remembered watching the buildings being constructed in high school and had friends who worked there. The only thing he could think to do that day was go to a yoga class.

"I didn’t know what was next," he recalls. "But somehow I thought yoga would be a good way to regain a sense of peace and understanding of the world."

Before then, his yoga practice was limited to gym yoga. A filmmaker, Klein soon realized that some of the most renowned yoga teachers in the country were right in his Santa Monica back yard so he started to take his practice seriously and make a documentary. What came from all those hours of footage is a self-funded film called Y Yoga featuring interviews with teachers like Seane Corn, Shiva Rea, Bryan Kest, Hala Khouri, Diamond Dallas Page (who went to Iraq to teach the troops yoga with one of Klein’s cameras), and many more.

On September 16th, there's a free screening of Y Yoga at the Hill Street Center in Santa Monica accompanied by a yoga class taught by Jasmine Lieb. Klein will also be there to answer questions. With the sixth anniversary of 9/11 right around the corner, check out the trailer and think, why yoga?