When compared to mixed-gender populations, the members of all-female lizard species are stronger, happier, and 10 times more likely to be named Trisha. Today's Groupon brings together likeminded ladies to increase fitness, morale, and results: for $24, you get a six-week unlimited pass plus six circuit Zumba classes and a water bottle at Curves (an $86 average value; prices vary by location). Curves is a fitness center designed exclusively for women. Redeem your Groupon at any of the 22 participating locations.

During Curves' signature 30-minute circuit workout sessions, gym-goers move around a system of hydraulic machines that provide a complete cardio and strength-training session for all of the body's major muscle groups. A soundtrack of fun, upbeat music includes cues to let you know when it's time to move on to the next station, and experienced trainers are at the ready to help maneuver machinery. Curves caters to ladies' health needs by shirking the traditional weight machines and ubiquitous urinals of regular gyms in favor of hydraulic-resistance machines, which use your body weight to create resistance that matches your abilities, decreasing the risk of soreness or injury. Because lift-and-lower motions create bulky muscles, each hydraulic machine uses push-and-pull motions to create toned, lean muscles perfect for crushing a grapefruit gracefully.

Thirty-minute circuit Zumba classes meld the strength-training benefits of a Curves circuit class with the hip-swaying steps of a Zumba dance session. Latin beats swirl the body as the invigorating choreography preoccupies the mind, tones the muscles, and seduces feet into rejoining the body. Groupon guests will also receive a water bottle, and those who decide to become full members of the cardio community can inquire at their local facility about current membership discounts.