Construction will begin this month on a new fitness studio at 8425 FM 423, Frisco. Hotworx is a fitness studio that uses infrared technology to boost the effects of workouts, including 30-minute isometric workouts or 15-minute high-intensity interval training sessions. The studio will offer a variety of fitness classes, including yoga, Pilates and barre-style workouts. Presales for the upcoming location begin April 23. Construction is expected to take about two months to complete, the owner said. www.hotworx.net