Curves 707 Old Frontenac Sq, Saint Louis, MO63131 Curves is a fitness franchise for women that is known for its 30 minute rotating workout format. A designated amount of…More time is spent at each station before moving to the next. Exercises include various strength training machines and a stretching circuit. While some women come daily, the recommended time investment is just three 30-minute sessions per week. The Ladue Curves also offers Zumba classes for its members.