Ancient yogis were famed for their ability to live in solitude, to exist in peace with nature, and to turn into raccoons whenever they were near a garbage can. Transform yourself into a beacon of stretchy peace with today's Groupon: for $30, you get a six-week yoga basics introductory series (a $60 value) at Iyengar Yoga Center of Denver, located in the Washington Park West neighborhood. Iyengar yoga is a form of hatha yoga that uses simple equipment to promote proper body alignment and increase flexibility. During the 90-minute basics classes, students follow certified instructors through a series of stretches, poses, and giant flaming hoops.