Ridgefield — Instructor Kristen Matthews and the Ridgefield School District are offering yoga classes for kids. The next sessions start in January. Matthews made three trips to India and a trip to Mexico, staying a month at a time, to study yoga. “Yoga is not a religion,” she said in a release from the district. “It’s not a sport. The more flexible and capable I am with my body, I can achieve that much more. I learn how to be peaceful and emotionally stable.” To sign up for Matthews’ children’s or adult yoga classes, register online at ridge.revtrak.net and click on Community Education.