#1 Men end Their Sexual Peak at 18, and Women Reach Theirs at 28
No, your sex lives aren't ruined to be permanently out of sync. Men's testosterone levels peak around 18, but hormones are only one little factor in the male sexual act, says Marc Goldstein, M.D., a professor of reproductive medicine and urology in NewYork And women have no set peak. If you and your spouse need to sync up your desire, agree to take turns inaugurate sex every few days. "S*x at least once a week is like vitamins for a relationship," says Ian Kerner, Ph.D., founder of GoodInBed.com.
#2 The G-Spot Doesn't Really Exist
Earlier this year, a French study found physical proof of this obscure erogenous zone: Women who were able to achieve vaginal 0rgasm had thicker-than-average muscle between the v*gina and the urthra. Whether this section is a magic 0rgasm-inducing key for you depends on your sensation, says Beverly Whipple, Ph.D., coauthor of The Orgasm Answer Guide.
#3 Watching P0rn Is a Guy Thing Watching p0rn is a guy thing.
Researchers at Washington University School of Medicine in St. Louis found that looking at er0tic images caused a rapid increase in women's electrical brainwave activity that was just as strong as in men's. "Women can use p0rn to find out what they like and are comfortable with in the bedroom," explains Lou Paget, a certified s*x educator.
#4 He's Threaten by Your Vibrat0r Wrong!
In fact, your guy might be secretly hoping you'll bust out a new "toyfriend" during your next play. According to a recent Indiana University study, 41 percent of women have used a battery-powered buddy with their partner. And it goes beyond him watching you go wild: "Many men find vibration pleasurable on their pen!s and other body parts," says Debby Herbenick, Ph.D., a research scientist at Indiana University and author of Because It Feels Good.
#5 You Can't Get an STD if You're in Water
You're actually more possible to catch an STD from an infected companion when you're not dry-docked. Water washes away the body's natural lubricnt, creating more friction, which enhance the risk of moisture in the vgina, where bacteria and viruses can enter. Cond0ms help, but they are easily softened by heat, chlorine, and oil-based substances in the water (like bubble bath or sunscreen). "If you're determined to have an underwater orgasm, stick to good old-fashioned manual stimulation," says medical sociologist Adina
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