填空题. Yoga, the ancient practice of postures, breathing and meditation, is gaining a lot of attention from the material world that its serious practitioners are trying to escape. Yoga practitioners are trying to keep themselves away from the material world. But no 11 wonder Americans who practice yoga are often well-educated, have higher-than-average household incomes and are willing to spend a 12 bit more on so-called "green" purchases seen as benefited the 13 environment or society. "It's kind of growing out of the crunchy stage of yoga to the Starbucks stage," said Bill Harper, a publisher of Yoga Journal. 14 "From the videos and the clothes and the toe socks... people are pursuing after this market with a vengeance." 15 A glance through recent issues of his month magazine, whose 16 readership has doubled in the past four years to 325,000, illustrate 17 the point. There are four-color ads from the like of Asics athletic 18 shoes, Eileen fisher apparel and Ford Motor Co. Yoga Journal is now licensing a Russian edition and preparing to expand in other international markets. Americans spend some $2.95 billion a year for yoga classes, 19 equipment, clothing, holidays, videos and more, according to a study commissioned by the magazine, fuelled in part by aged baby boomers seeking less aggressive ways to stay fit. Roughly 16.5 million people were practising yoga in the United States early last year, in studios, gyms or home, up 43 percent from 2002, the 20 study found. Established sellers of yoga gear such as Hugger Mugger and Gaiam have been flooded with competition in the market for yoga mats, incense, clothing and fancy accoutrements ranging from designer yoga bags to eye pillows.