HOTWORX - Knoxville, TN - Hardin Valley

This 24-hour infrared fitness studio provides gym members with access to seven private infrared saunas, each accommodating up to three people for virtually instructed workouts. The infrared heat is frequently described as a game changer, with members noting significant benefits from exercising in the heat, including improved heart health, muscle relief, and positive effects on the skin. The sauna facilities are consistently praised for their cleanliness. Members engage in a variety of infrared sauna workouts, including 15-minute High-Intensity Interval Training (HIIT) sessions like Hot Cycle, Hot Blast, and Hot Thunder, and 30-minute isometric workouts such as Hot Pilates, Hot Yoga, Hot Barre, Hot Core, and Hot ISO. The instructor-led videos on screens in each sauna are described as upbeat, positive, and effective.

Beyond the saunas, the gym features a functional (FX) zone equipped with free weights and a TRX machine. The facility offers 24/7 keycode access via a dedicated app, which is also used for scheduling sauna sessions. Members appreciate the private workout environment, the flexibility of the schedule, and the clean, well-lit, and safe premises. The staff receives consistent praise for being friendly, knowledgeable, and helpful, particularly with the app and equipment. The atmosphere is noted as positive and motivating, with members often supporting each other. A membership, along with a towel and mat, is required to begin using the infrared saunas.