Manduu, a Nashville-based fitness studio, opened July 29 at 3733 Westheimer Road, Ste. 5, offering FDA-approved electrical muscle stimulation technology. The first studio to offer the service in the U.S., Manduu said it can deliver six hours’ worth of exercise in 15 minutes. Each session begins with a full body scan to determine muscle mass, body fat and other metrics to determine a customized approach. 713-828-9664. www.manduu.com