Yoga teachers are afraid of money. Well, not all of them. Some of them love money, revel in it, take baths in it (perhaps). But many of us abhor the green stuff, and wish it would stay away from us. Yoga teachers want to share their healing and their passion, and gumming up that energy exchange with little papers and coins just seems wrong. Nevertheless, Whole Foods requires something in exchange for $17/lb organic fresh cherries. You can’t show up to teach your class in a burlap sack, either: Lululemon will want something for those Luon pants.