Gina Ogden, PhD, LMFT, is an award-winning sex therapist, researcher, and founder of the 4-D Network for Body, Mind, Heart, and Spirit. She is the author of twelve books on sexuality and of the only national survey to investigate sexuality and spirituality. Her work is archived in the Kinsey Institute. She lives in Cambridge, Massachusetts (www.GinaOgden.com; www.4-DNetwork.com).