Darrin Zeer (also known as "Yogi-D") is a certified yoga teacher and yoga therapist based in Boulder, Colorado. He leads High Yoga retreats throughout the year, combining yoga and meditation with m...view moreDarrin Zeer (also known as "Yogi-D") is a certified yoga teacher and yoga therapist based in Boulder, Colorado. He leads High Yoga retreats throughout the year, combining yoga and meditation with marijuana use. Zeer is the author of eight books, including the bestselling Office Yoga.view less