ABOUT HOTWORX HOTWORX is a virtually instructed exercise program created for users to experience the many benefits of infrared heat absorption, while completing a 30-minute Isometric workout or 15-minute High Intensity Interval Training (HIIT) session. As the infrared heat penetrates your body causing you to sweat, the isometric postures further accelerate detoxification by physically removing the toxins from your organs through muscle contraction.