Sure, Afro Flow Yoga includes the familiar meditation and breathing techniques to start. But when the African drumbeat begins, all bets are off. You move, you sway, you can’t help but connect to the Earth and yourself. Founder and Alvin Ailey-trained dancer Leslie Salmon-Jones mixes African diaspora dance movements with meditative yoga sequences during weekly classes in Jamaica Plain, Roxbury and Cambridge. Her only rule: It’s a judgment-free zone. Leave your hang-ups at the door and let your soul flow.