Giving a woman just one orgasm is cause for celebration. But any woman who can climax once can probably cross the finish line again—and again. The ability to come more than once is biological gift exclusive to the fairer sex. A man has to wait for your refractory period to pass before they're ready for round two, but women don’t seem to need the same reloading phase, says Men’s Health sex advisor Debby Herbenick, Ph.D. A woman could experience her second wave of pleasure less than a minute after the first. But just because she can come twice doesn’t mean she will. Studies suggest that somewhere between 14 and 40 percent of women have had multiple orgasms in one session. How do you help her become one of the lucky ones? First, make sure that’s what she wants. Some women would rather cuddle after climaxing than be pressured into an encore. Next, remember that women differ dramatically in regard to how they can achieve one orgasm, l...