Losing weight is a challenge almost as difficult as reading an entire dictionary or climbing a tree that's covered in canola oil. Enlist expert help with this Groupon. Choose Between Two Options $19 for 10 whole-body-vibration sessions (a $98 value) $29 for 20 whole-body-vibration sessions (a $196 value) During each 10-minute session, clients stand atop a vibration machine that resembles a cross between a treadmill and a scale. The vibrations cause muscles to contract, thereby burning calories and increasing heart rate. Unlike traditional workouts, clients never have to change out of their street clothes or suits of armor for the vibration sessions.