Northborough – Gypsy Phillips (front) leads students (l to r) Gwen Pratt, Lorna Dyer, Norma Giumentaro and Alida Krumin during the Jan. 5 session of Belly Dancing, one of several fitness classes offered weekly at the Northborough Senior Center. Phillips also teaches with Northborough Recreation, the Shrewsbury Senior Center, and Assabet After Dark, the continuing education program at Assabet Valley Regional Technical High School in Marlborough.