Exercise keeps the body in peak condition, which explains the marbleized ThighMaster lying next to Michelangelo's David. Enjoy an anatomical Renaissance with today's Groupon: for $19, you get a six-class punch card for spinning, yoga, or group fitness classes at The Delta (a $79 value).

The Delta's dedicated fitness instructors continually upgrade their group fitness routines and personal training techniques with knowledge garnered from workshops, seminars, and conventions. A rousing schedule of small group classes jolts lethargic musculature into action with early morning Barre Sculpt sessions, which center around a ballet barre, and a strength training Muscle Pump track, which tones striates through resistance from dumbbells, body weight, and Molotov cocktails. One-hour Stretch and Flex classes target hips, shoulders, and core muscles to enhance balance, flexibility, and range of motion in fatigued figures, and 7 a.m. yoga stirs drowsy limbs and calms busy minds. Hop onto a Spin Trac bike to explore invisible landscapes with an octet of other cyclers, or climb aboard a stationary helicopter to enjoy the scenery from an aerial vantage. Gym goers can also refresh dog-tired muscles in spacious locker rooms that feature rainwater showerheads and balmy steam rooms.