“Take a deep inhale through the nose. Long exhale through the mouth.” Perched upon a yoga mat for her Thursday afternoon lesson, Lauren Ross slid effortlessly into the next position. She encouraged ...

Three men in their 50s, carrying rolled-up mats, walk into an afternoon class at Yoga Tree. A fourth man in his 50s is seated on the bench in the lobby. He is Tim Dale, 53, a reformed nightclubber who ...