Although feeling the burn during a workout is generally a good sign, feeling the burn while sitting on the sofa means your sofa is in the fireplace. Engage in controlled, constructive body burning with today's Groupon: for $50, you get a three-month membership (a $150 value) to Kinetics Fitness, a women-only gym in New Braunfels.

Kinetics helps keep health-conscious women in peak form with an enthusiastic staff of personal trainers. Kinetics offers glucose testing, blood pressure measurement, and BMI calculations for members, allowing exercisers to keep track of their health inside and out. Open 24 hours a day, the healthatorium charges no contract or enrollment fee and lets patrons breathe as much oxygen as they wish. Plenty of circuit strength-training and cardio machines help iron pumpers avoid lines and checkboard-wielding bouncers.

With a yellow-rock entryway and elegant tiled floors leading to the gym, Kinetics makes the gym experience feel upscale and relaxed. A warm locker room features plush, black benches and rattan furnishings with amazing abs. Replenish with a complimentary bottled water after an invigorating elliptical master session or impromptu music video on the treadmills. Visitors can also freshen up after a workout with Kinetics' free amenities, which include lotion, makeup, and hair gel.