***A NEW YORK TIMES BESTELLER*** An essential exploration of why and how women’s sexuality works—based on groundbreaking research and brain science—that will radically transform your sex life into one filled with confidence and joy.Researchers have spent the last decade trying to develop a “pink pill” for women to function like Viagra does for men. So where is it? Well, for reasons this book makes crystal clear, that pill will never be the answer—but as a result of the resear