21.   I prefer my all-female exercise class to coed gyms.

22.   In addition to the orchestra, it has been a host for exercise classes, a theater troupe and various classes and public lectures.

23.   In a fit of delirium, I had signed up for five exercise classes on Saturday, with a foot treatment thrown in as a reward.

24.   In many countries with highly conditioned aerobics competitors, there is little or no mainstream access to aerobic exercise classes.

25.   In the past, most health clubs with group exercise classes offered a variety ranging from about A to B.

26.   Indeed, critics say, plans often target the healthy by offering items like credit for exercise classes.

27.   Instead, the sides have engaged in more posturing than an exercise class.

28.   Most communities sponsor exercise classes for older adults, usually at senior or community centers.

29.   More and more, clubs rely on revenues from consumers hiring personal trainers or signing up for group exercise classes.

30.   My exercise classes keep my mind sharp and help me go without sleep.