Playing hip-hop or Doris Day, older exercise instructors can speak their peers' language

The students in Bengie Santos' exercise class at the Greater Seattle Y say there's something special about their 72-year-old instructor. There's her eclectic music, from Doris Day singalongs to hip-hop routines and line dances. There's her energy and the way classmates become friends. Y organizers and other experts say older instructors can offer extra motivation to their peers. Exercise and being with people are crucial for healthy aging. But motivation can be tough. Daniel E.