Prenatal Pilates: Tone and Tighten is the second pregnancy workout series created by Pilates expert, Caroline Sandry, as a follow up to her first release, Prenatal Pilates: Strengthen and Sculpt. This program was designed to keep you in shape throughout your pregnancy as well as helping you through the 9 prenatal months, and through labor and delivery and will also help your postnatal recovery. End the 4-part Pilates series with The Relaxation Session.