While it only takes two to tango, it takes an entire dance studio to ward off gangs of square-dancing street toughs. Hone your defense mechanisms with today's Groupon: for $30, you get one month of unlimited Zumba classes at Stamford Athletic Club (an $82 value).

Stamford Athletic Club spices up exercise with fun, calorie-burning Zumba group dance classes. After summoning Latin beats from surrounding speakers, licensed instructor Shaira Mitchell leads students into a body-toning world of rhythm, enthusiastically aiding beginners in locating, and falling into, the groove. During scheduled one-hour workouts, bodies shimmy, swivel, twist, and shake off calories while minds escape into the pleasure of dance. The easy-to-follow routines integrate resistance training with alternately fast and slow rhythms, squeezing the maximum fitness benefit out of the oranges that appear, unbidden, at the start of every fitness endeavor. This Groupon grants unlimited access to one month of dance parties, after which exhausted pupils can sink into oversize leather seats in the club’s lobby.