Sex By the Numbers

, Move over Masters and Johnson. Samuel and Cynthia Janus, another husband-and- wife research team, surveyed 2,765 men and women across the U.S. about sex.

--44% of men and 41% of women said their sex activity is up from three years ago; 27% of men and 32% of women said it has decreased.

--59% of married men and 61% of married women said sex is better after marriage.

--35% of married men and 26% of married women reported having had at least one affair.

--10% of men and 4% of women reported they have had sex with more than 100 partners.

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