I teach a hardcore cycling class twice a week - 45 minutes in length. I've found that distracting the class makes it go faster and they seem to even work harder while they are thinking. I go to the local library and find books or magazine articles I can share with the class. I've done numerology, astrology (Cosmopolitan Bedside Astrologer was a big hit), what your name means, birth order ,etc. It lets my class get to know each other a little better and gives them a sense of community. My participants are from all walks of life, age, race, and gender. They have commented many times on how entertaining the class is for them. I hope this helps another class out there.