From the reviews: This short book details the impact of maternal exercise on the developing baby. The purpose is to show the potential benefits and the absence of harm of expectant mothers engaging in light exercise in the perinatal period. This is a worthwhile objective and the author does a good job of achieving it. ... There are few if any books detailing the impact of exercise in pregnancy, and this book has great potential. (Anthony Shanks, Doody's Review Service, July, 2012)