Curves International, also known as Curves for Women, Curves Fitness, or just Curves, is an international fitness franchise co-founed by Gary and Diane Heavin in 1995. Curves currently has 10,000 locations worldwide and an estimated 4 million plus members (as of October 2006). It is a privately held company by its co-founders, with corporate offices located in Waco, Texas. Curves fitness and weight loss facilities are designed specifically for and focused on women, although in some states, men are allowed to join.