Being situated in a very body-conscious city, many of Miami's hotels have state-of-the-art gyms. The David Barton Gym at the Delano Hotel, the Spa of Eden at the Eden Roc Hotel, and the fitness center at the Biltmore Hotel are just some examples of the impressive and state-of-the-art equipment and facilities some Miami hotels can boast. Guests of hotels with health clubs can usually use the equipment for free (though not at the Delano's gym, where guests have to pay $15 a day!). Although many of Miami's full-service hotels have fitness centers and may be convenient, you can't always count on them in less-upscale establishments or in the small Art Deco District hotels. Instead, you may want to turn to the several health clubs around the city that will take in nonmembers on a daily basis. For Bally's Total Fitness, dial tel. 800/777-1117 to find the clubs closest to where you'll be staying. (There are no outlets on the beaches; most are in South Miami.) One of the most popular clubs, which welcomes walk-in guests is Crunch, 1253 Washington Ave., South Beach (tel. 305/674-8222), where you might work out on the top-of-the-line equipment with Cindy Crawford, Madonna, or any of a number of supermodels when they're in town. Use of the facility is $18 daily or $65 weekly. It keeps late hours, especially in season, when it's often open until midnight.