Orangetheory Fitness opened June 10 at the Lamar Union mixed-use development, located at 1100 S. Lamar Blvd., Ste. 1115, Austin. The studio offers a group fitness concept that uses 60- and 90-minute classes broken into intervals of high-energy training. 512-807-0400. www.south-lamar.orangetheoryfitness.com