PRESS PHOTOS BY TIM GILMANZumba exercises are done enthusiastically by Nyamka Jones and Sharonda Reed of Bethledhem during classes under way Thursdays at the South Side branch of the Bethlehem area Public library, “I've come to them all. I love it,” said a smiling Nyamka Jones during a break in a recent 6:30 - 7:30 session. The classes are free, but registration is required. The sessions are open