Everyone moved side to side, warming up as dancers before a ballet or jazz class. A few stretched, but mainly tried not to splash their neighbor too much. The music started and was festive with accents from the 1980s. It lifted us all with a can-do attitude. But then they added weights… We all groaned and continued, and laughed. All except a very tall senior person, who I call the General, who was at the back of the class looking serious and sedate. It was my second week back at water aerobics here in the Bay Area and I watched…