For perhaps three quarters of all males, orgasm is reached within two minutes after the initiation of the sexual relation Considering the many upper level females who are so adversely conditioned to sexual situations that they may require ten to fifteen minutes of the most careful stimulation to bring them to climax, and considering the fair number of females who never come to climax in their whole lives, it is, of course, demanding that the male be quite abnormal in his ability to prolong sexual activity without ejaculation if he is required to match the female partner.