Yoga is unique in that it is the only medieval physical-fitness art that does not involve firing crossbows at a Grendel. Bend, stretch, and sweat sans bloodshed with today's Groupon: for $49, you get two months of unlimited yoga classes at Bikram Yoga St. Charles.

Good for all levels of bender, Bikram's 90-minute flex fiestas combine certified instructors, heated classrooms, and 26 pliable postures to concoct a workout that builds strength, flexibility, and balance while helping expunge pesky toxins. Over your two months of unlimited membership, check the schedule to plan your stretchery, and then head to its clean, welcoming studio to commence the contortion. The encouraging atmosphere helps you fit your body into poses and kitchen cupboards you never dreamed possible. The 104-degree heat adds penetrating power to each of your movements, elevates your metabolism, and awakens vestigial organs, making it easer to burn fat or wrestle dragons. In addition to helping work up a toxin-destroying sweat, the intense Bikram workout helps protect the body from injury. Mat rentals are available for an additional charge. Please arrive 20 minutes before class.

Reviews

Four Yelpers give Bikram Yoga St. Charles a five-star average. Here's what they had to say:

• I was kind of afraid to go to the class, not knowing what to expect, but the instructor was really cool. She really explained what the poses did for your body, and she pushed you as far as you could go, but not an inch further. There were people of various shapes, sizes, and ages, and they all seemed to be doing very well. – Loki A.
• I literally could have been in class with Mother Theresa and I wouldn't have known because I was so intensely focused on my practice. You will exert yourself to the point of exhaustion but the benefits are innumerable. – Amanda S.