Exactly How sex that is long Endure in Your 40’s? Here’s Exactly Exactly What 8 Women Told United States The responses might shock you. Just how long should good intercourse final? Well, that depends. “There’s no secret quantity,” Debra Herbenick, the manager regarding the Center for Sexual Health Promotion at Indiana University in Bloomington, formerly told Fatherly. “Some individuals prefer fast sex — possibly they will have children that may awaken any 2nd or are inclined to genital discomfort.