This water exercise program soothes arthritis pain, strengthens joints, and improves range of motion and lung capacity. Ellen Helman, certified water fitness instructor 8-week courses begin: Wednesday, September 7, and Monday, September 12 | 10:30 to 11:15 a.m. Somerville YMCA, $50 To register, call 908.685.2814.     Photocopy courtesy of CSG Swim Gear Ltd