Moving one's body to the rhythm of music is a natural human instinct, just like running toward the sound of lightning. Move with today's Groupon: for $40, you get 10 dance-fitness classes at Dance Trance, located at Rigby's Jig Dance Studio (a $100 value).

Director Sandi Cauley and the skilled instructors at Dance Trance help to tone bodies through a schedule of classes featuring choreographed dance routines. Each 60-minute class encourages beginner to advanced dancers to shuffle in unison and nab new dance moves from traveling jitterbug salesmen. The festive studio harbors the energetic exercises with wooden floors, upbeat music, and lighting effects. For continual evolution, the staff culls from various dance genres, including Latin, hip-hop, funk, and jazz. Instructors avoid song disruption by communicating to groups mid-workout with various hand signals, such as tapping the head to signal a repeated dance combination or raising the roof to alert of low-hanging ceiling fans.