$20 for Two Weeks of Unlimited Yoga Classes at 90 Degrees Hot Yatra Yoga (Up to $95 Value)

Yoga is a much easier way to exercise both mind and body than testing Einstein's theory of relativity by racing a beam of light. Avoid a science-related sprain with today's Groupon: for $20, you get two weeks of unlimited yoga classes at 90 Degrees Hot Yatra Yoga (up to a $95 value).

Featured on Scene on 7 for its flexibility-boosting, detoxifying hot-yoga classes, 90 Degrees Hot Yatra Yoga brings experienced instructors together with motivated students seven days a week for challenging traditional- and hot-yoga practice. A fusion of heated-yoga styles, yatra yoga's one-hour sessions guide yogis through heat-deepened postures designed to warm the muscles, limber the body, and purge the mind of half-finished scripts for buddy-cop comedies. Both challenging and accessible for students with various levels of yoga experience, yatra yoga allows participants to work through poses at their own speed, honing mental clarity and facilitating the release of toxins through sweat.

Benders seeking a cooler climate in which to uncurl their body knots can partake in the 75-minute prana-flow method, a non-heated Vinyasa style of yoga that moves students gently through classic asanas and focuses on breath and body awareness until students' bodies move through postures as one, as synchronized as the stomps of a line dancer.