MOUNT KISCO, N.Y. -- Deb Ehrenberg, master trainer at Saw Mill Club, created a new program called "Cross Jam," a small group training program, offered on Mondays at 9:30 a.m. Designed for all fitness levels, Ehrenberg creates a new workout of the day that allows each member to compete together as a group, against the clock. Small group training helps to improve fitness and gives a dose ...