A downward dog may not sound strenuous to the non-yogi, but after 60 minutes of yoga push-ups, inversions, and balancing in a room that’s as hot as the Holy City in August, even the most muscular bodies will shake. The majority of the classes at Charleston Power Yoga are taught in a heated room, a steamy 90 degrees plus body heat. These hot-hot sessions help folks relieve stress while releasing some exercise-induced endorphins and a whole lot of sweat.