10.Why do you do it?
Sure, there's the obvious. But there's also an argument for men's biological drive to perpetuate their genes: An 18th-century Russian woman holds the world record for having birthed the most children: 69, which she had over the course of 27 pregnancies that included sixteen pairs of twins, seven sets of triplets, and four sets of quadruplets. But she's outdone by the male record-holder for most kids, a Moroccan emperor who, according to the Guinness Book of World Records, sired "at least 342 daughters and 525 sons, and by 1721, he was reputed to have 700 male descendants."
9.Does size matter?
Relax, guys. No matter what those, ahem, movies might suggest, in the United States, the average erect penis is five to seven inches long, and four to six inches in circumference。
8.Do you need assistance?
Approximately 5 percent of 40-year-old men and between 15 to 25 percent of 65-year-old men experience erectile dysfunction。
7.When did you lose your virginity?
The average male loses his virginity at age 16.9; females average slightly older, at 17.4. And a new study shows that genetics may be a factor: inherited traits, such as impulsivity, can make a person more or less willing to have sex at an earlier age。
6.Do you have a comfortable couch?
About one out of 10 married adults -- 12 percent -- say that they typically sleep alone。
5.Do you reach orgasm every time?
While 75 percent of men always reach orgasm during sex, only 29 percent of women report the same. In addition, most women are unable to climax through vaginal intercourse, instead needing clitoral stimulation。
4.Do you get fringe benefits?
Two-thirds of college students have been in a "friends with benefits" relationship, citing the lack of commitment required as the main advantage to such an arrangement. More than half of those who had sex with a friend said they had engaged in all forms of sex; 22.7 percent said they had intercourse only, while 8 percent said they did everything but have intercourse。
3.How many sex partners have you had?
What's your number? According to a survey of adults aged 20 to 59, women have an average of four sex partners during their lifetime; men have an average of seven。
2.Did you take maternity leave?
Two-thirds of women who had their first baby between 2001 and 2003 worked during their pregnancy, and 80 percent of those women worked within one month or less of giving birth. Compare this to the period between 1961 and 1965, when 44 percent of women worked during their pregnancy (35 percent worked one month or less before delivering)。
1.Are you infected?
At least 50 percent of sexually active men and women will have a genital HPV infection at some point in their lives. HPV, or human papillomavirus, comes in both low- and high-risk forms; low-risk HPV can cause genital warts, and high-risk can cause cervical and other cancers. In 90 percent of cases, the body's immune system will fight off the disease within two years。
是的，这很明显。然而关于男人使其基因传承下去的本能仍然有这样一个论据：一位十八世纪的俄国妇女是世界上生育最多的女人--她怀孕了27次，生下了69 个孩子。其中有16对双保胎，7组三胞胎和4组四胞胎。然而世界上拥有者最多子女的男性却轻易的将她超越--根据吉尼斯纪录，一位摩洛哥的国王至少有 342个女儿和525个儿子，而到1721年，据称他有700个男性后代。