Theresa and Brad Halvorsen are the parents of twin boys. Theresa is a certified childbirth educator, a pregnancy, birth, and breastfeeding expert, and a former doula. She teaches prenatal and mommy-and-me yoga classes. She runs an informational website for parents and birthing professionals called TheOnlyBabyStop.com. The Halvorsens own a center for new and expectant parents in Sacramento, California.