HardCore Training Center is a functional training gym in downtown Ketchum serving the Sun Valley area. Founded by Bill and Naty Nurge, the center offers personal training and small group classes, with an emphasis on safe, effective training for adults 40 and older. Since 1988, Bill Nurge has helped clients lose weight, build muscle, and improve sports performance, while Naty Nurge brings experience as a lifelong fitness trainer, women’s fitness specialist, and pro athlete.