HOTWORX - Modesto, CA - Century Center Modesto is a family-owned, 24-hour infrared fitness studio and gym in Modesto. The studio offers virtually instructed infrared sauna workouts including hot yoga, Pilates, barre, cycling, HIIT, and other fitness sessions, with unlimited 24-hour member access. Located in the Century Center shopping area at Orangeburg Avenue and Oakdale Avenue, it emphasizes a welcoming environment focused on fitness and healthy living.