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 $29, you get enrollment (up to a $195 value) and a two-month membership with unlimited access to all classes and facilities (up to a $170 value) at Und1sputed (a $365 total value).

Und1sputed's experienced instructors boost metabolism, self-esteem, and self-defense skills during martial-arts-based and boxing fitness classes in more than 50 scheduled timeslots each week. During one-hour boxing classes, students learn basic skills and professional training methods such as jumping rope, reviewing Rock 'Em Sock 'Em–robots footage, and running medicine-ball drills while admiring the center's full-size regulation boxing ring. A mixed-martial-arts class combines boxing, kickboxing, and grappling techniques to get exercisers' feet flying and hearts pumping. Learn core tenets of self-defense during the Bar Room Brawl class, an intense one-hour workout that targets excess fat with kick-punch combinations, bag work, and toning moves for the abs and gluteals. Classes are followed by open-mat rolls, and patrons have access to a large selection of weights ranging up to 200 pounds, the same weight as 10,000 pro-wrestling VHS tapes.

Today's Groupon includes the enrollment fee, so customers wishing to continue membership after the initial two months may do so without incurring an additional charge.

Though Und1sputed sometimes features a discounted price online, this Groupon still offers the best deal available.