Don’t zero-in on the target

While you may want to use your newfound wisdom to shower your woman with nipple-gasms, remember that her entire chest is important. The nipple is actually the least sensitive to touch, says Debbie Herbenick, Ph.D., the Men’s Health Sex Professor and a sexual-health researcher at Indiana University’s Kinsey Institute. Austrian researchers found after testing 150 women that the top quarter of their breasts—think between 10 and 2 on a clock—felt sensations most strongly, then the areolas—the dark area circling the nipple—and surprisingly last, the nipple itself. Don’t focus on one area, Herbenick says. The more territory covered, the better. (And for more breast tips, check out The Best Ways to Touch Her Breasts.)