The authors are three highly qualified women's health professionals who are passionate about helping women improve their prenatal and postnatal fitness. After years of training individuals and running successful independent businesses, they started Bellies Inc., a global company dedicated to helping educate and empower women in their pregnancies, births, and recoveries. They bring to this book both their shared interest of helping women understand prenatal and postnatal fitness and their unique professional experience.

Julia Di Paolo, Reg. PT, received her physiotherapy degree from the University of Ottawa in 1997. Her practice is focused on the preconception, prenatal, intrapartum (labor and delivery), and postpartum stages and on all types of pelvic floor dysfunction at any stage of a woman's life. Over the years, Di Paolo has established herself as the go-to physiotherapist in Toronto for pelvic health and recovery from diastasis rectus abdominis (DRA).

Di Paolo teaches courses on diastasis rectus abdominis for personal trainers, allied health professionals, and pelvic health physiotherapists. She has presented on DRA and the pelvic floor at the conferences of the Association of Ontario Midwives, the Ontario Physiotherapy Association, canfitpro, and the Certified Personal Trainer Network (CPTN, formerly Canadian Personal Trainers Network).

Samantha Montpetit-Huynh received her fitness leadership certificate from Seneca College in 2002. She has been a personal trainer for over 15 years, focusing on pregnancy and postpartum fitness. She is also certified as a fitness for fertility specialist.

Samantha is known extensively in her field and has appeared on Breakfast Television, CTV News, Canada AM, CHCH, and Rogers Daytime. She was also the resident fitness expert on the Marilyn Denis Show, an award-winning lifestyle show seen across Canada, from 2013 to 2017. Samantha also helped to create the Today's Parent Healthy Pregnancy Guide.

Kim Vopni holds a bachelor's degree in psychology from the University of Western Ontario and a postgraduate diploma in health and fitness from Simon Fraser University. She has more than 15 years of skilled experience and is certified as a personal trainer, prenatal and postnatal fitness consultant, and fitness for fertility specialist, and she is a hypopressive method instructor. Kim is a passionate speaker, educator, and promoter of pelvic health and is known as the Vagina Coach.