Gyms can run the gamut. On one end, an upscale gym can supply fresh towels, personal training, a sauna, racquet ball courts and a full schedule of the best new exercise classes. On the other, you may find yourself waiting in line for a treadmill, wondering when the weights were last cleaned and avoiding the changing rooms altogether. Joining us this week on “Take Care,” is Anna Medaris Miller , who is a health and wellness reporter at U.S. News & World Report. Miller shares advice on finding