HOTWORX - Bismarck, ND - Sunrise Square is a 24-hour infrared fitness studio and gym in Bismarck offering virtually instructed workouts in patented infrared saunas. Members have unlimited 24-hour access to sessions including hot yoga, Pilates, barre, cycling, HIIT, and other fitness formats. The studio describes its approach as combining heat, infrared energy, and exercise through its 3D Training method.