Orangetheory Fitness, 243 Wonder World Drive, Ste. 108, San Marcos, opened Jan. 26. The fitness studio provides 60-minute classes that utilize free weights, treadmills, rowing machines and other equipment.

Heart rates are monitored during workouts, with the goal to maintain a heart rate that is ideal for metabolism and energy. 512-357-3057. www.san-marcos.orangetheoryfitness.com