"Sex triggers brain chemicals that can improve creativity at work." "Strippers earn more money when they're ovulating. Scientists suspect it's because of the pheromones their body releases." Try spanking, oxytocin, a chemical released during sex, cuts the pain in half. Peyronie's disease is what causes his curved member, a new drug is being tested to correct it. Women with higher levels of oestradiol cheat more often. "It creates bigger breasts and smaller waists. As a result, they tend to get more attention, and therefore, have more sexual opportunities." Getting bored with manual stimulation? 53% of women have used a vibrator, let's see if we can raise that statistic. "A study of college students found that over a two-year period, both men and women had twice as many hookups as first dates." Only 30% of men (worldwide) are circumcised. If your guy is au naturel you might want to keep in mind that the tip of his penis is slightly more sensitive, so a gentler touch might be appreciated. Wondering how many partners is too many? The average for straight men is 7, for straight women it's 4. "Having sex once a week can improve your immune function by 30%." "1 in 4 women over 35 says she never has sex." Gold digger alert: more women enjoy sex more with men who have more money. [How many more times can I say more? More, More More!] Wedding bells might mean more sex, married women get it on more than unmarried women do. What the A-spot? "Located on the upper wall of the vagina, near the cervix. When stimulated it increases lubrication." Having sex for 30 minutes burns about 85 calories.