Saturday, March 21, 11 a.m.-12 p.m. – Laughter Yoga improves health, happiness and joy. It requires no special clothing, no equipment and no special poses to learn. The more you engage in laughter, the better you feel. Free. The public is invited to attend. Class limit is 10. For those ages 18 and older. To register, call 770-512-4640. Dunwoody Branch Library, 5339 Chamblee Dunwoody Rd., Dunwoody, 30338.