Practice this water exercise program that soothes arthritis pain, strengthens joints and improves range of motion and lung capacity. Ellen Helman, certified water fitness instructors Eight-week courses begin: Wednesday, November 2 and Monday, November 7 10:30 to 11:15 a.m. Somerville YMCA, $50 To register, call 908-685-2814     Photocopy courtesy of CSG Swim Gear Ltd