The 2012 "Yoga in America" study released by San Francisco's Yoga Journal indicates that some 20 million people, or 8.7 percent of US adults, practice yoga, compared to 15.8 million from a 2008 study, an increase of 29 percent.
In addition, practitioners spend $10.3 billion a year on yoga classes and products, including equipment, clothing, vacations, and media. The estimate from the 2008 study was $5.7 billion.
Of current non-practitioners, 44.4 percent of Americans call themselves "aspirational yogis" - people who are interested in trying yoga.