If you’ve been teaching long enough, you’ve likely had this moment: A regular client quietly mentions she’s 10 weeks pregnant. A postnatal mother joins your reformer class six months after birth. A long-term client returns following a caesarean delivery and says, “I just want to get my core back.” Understanding physiological changes in pregnancy improves instructor confidence and professional decision-making. As Pilates instructors, we want to support these clients safely and