Yogi Bhajan's version of Kundalini Yoga has continued to grow in influence and popularity largely in the Americas, Europe, South Africa, Togo, Australia, and East Asia, with the training of many thousands of teachers. It is popularized through books and videos, teachers such as Gurmukh Kaur Khalsa, research by David Shannahoff-Khalsa, Dharma Singh Khalsa, Sat Bir Singh Khalsa and others, and through the publicity accorded it by various celebs such as Madonna, Demi Moore, Cindy Crawford, Russell Brand, Al Pacino, David Duchovny, and Miranda Kerr who are known, or have been known, to practice it. One 2013 article in a New York wellness magazine described Kundalini Yoga as "The Ultra-Spiritual Yoga Celebs Love."