Bonnie Berk, RN, is the founder of Motherwell and a childbirth education specialist with more than 25 years of experience working in the obstetrical and women's health fields. She is a pioneer in the field of pre- and postnatal fitness, as proven with the success of the Motherwell program. This program is offered through more than 100 hospitals and fitness centers in the United States and abroad.

Berk is an author, speaker, and consultant to a broad range of institutions addressing the special needs of women before, during, and after pregnancy. She is a frequent TV and radio talk show guest, has been featured on the Discovery Channel, and serves as the fitness expert on the Harrisburg ABC affiliate, WHTM-TV 27, on the "Daybreak Show." She has given presentations throughout the United States and has written numerous articles that have been featured in Baby Talk, Pregnancy, Vogue, Shape, Fitness, and many other consumer and trade publications. Berk has also produced two award-winning videos, Motherwell Exercise Video for Pregnant Women and Motherwell Yoga Video for Expectant Moms. In addition, she is a certified master personal fitness trainer through the IDEA Health and Fitness Association, a registered yoga teacher through Yoga Alliance, and a certified Pilates instructor by American Muscle and Fitness, Institute of Fitness Training.

Berk lives in Carlisle, Pennsylvania, and enjoys scuba diving, in-line skating, and hiking. She can be reached through her Web site, www.motherwellfitness.com.