Pilates helps humans match the flexibility of animals, like the octopus, which can squeeze itself through an opening the size of its own eye, or the Sasquatch, who eludes photographers by hiding inside mailboxes. Achieve bendable appendages with today's Groupon: for $24, you get one private 30-minute Pilates-equipment lesson or one 30-minute personal training session at Inline Private Training (a $48 value).

Perched atop the historic Holland Tack Factory building, Inline Private Training tones bodies in a spacious yet private sculpting sanctuary awash with natural light. Exotic plants accent the studio, providing silent encouragement as instructors deliver guidance at your fitness level to help achieve safe form for an effective workout. The private Pilates equipment class gives form-refiners one-on-one training and support as they acquaint themselves with unique machinery, including the reformer, tower, ladder barrel, wunda chair, or Cadillac. Learning the ropes, pulleys, and Rubik's cubes of Pilates equipment helps enhance flexibility and mold bodies for maximum muscle-shaping results. During personal-training sessions, coaches whip up effective conditioning routines that blend stretching, resistance training, postural performance, and a secret blend of herbs and spices.

To attune karmatic equilibrium with your newly honed physique, $1 from each Groupon purchase benefits the American Cancer Society, which raises cancer awareness, funds medical research, and supports those fighting against the disease.