When women find a fun new fitness class, they talk. Which is lucky for Aerobic Rhythmics, since it was primarily word-of-mouth that caused the aerobic workout to spread throughout 20 schools in Montgomery and Bucks counties, community buildings, and church locations since the first class in 1980. Instructors lead them through engaging, high-energy routines with nothing but resistance bands, hand weights, and mats, which produces lasting results.