A growing chain of hot yoga studios, Oxygen Hot Yoga & Fitness features hot yoga sessions with an unusual twist—all classes are performed in infrared heat. Believed to help the body detoxify and rid itself of fat more easily, infrared heat may also help reduce cellulite and clear up skin problems, combing the benefits of yoga and a spa visit into one convenient workout. Best of all, the classes––which are taught by licensed instructors––offer various exercise modifications and variations, meaning they'll never become boring, even if practiced during a biology lecture.