Our sexual behaviour varies at different times in our lives. Sex guru Tracey Cox in her bestselling book, ‘Sextasy’ reveals the sexual urges and traits of lovers according to their age…20-something Most guys just can’t stop dreaming about sex every couple of hours. At this age, girls are usually rebellious in their sexual imaginations. They share same-sex fantasies or want to try out bi-sexuality. A 2006 study of nearly 2000 people discovered that 76 per cent of women who slept with women reached orgasm (for women with men, the figure stands at 50 per cent).The 20s are the time when young boys and girls are most experimental in their sexual positions. One in 10 people claims Tracey Cox have had a threesome in their early twenties.Also, people in this age group have most likely visited a strip joint or a lapdancing club – with their friends or their better half.30 something The 30s are a time to experiment, almost all 30-somethings claim to have had sex outdoors. Unlike the teens when making out was the most common form of sexual experimentation, most 30 somethings prefer having sex somewhere semi-public like the beach, in the garden or on a park bench in the darkness. There’s something wildly erotic about these sexapades! Also, high on the 30 something popularity chart are having sex in the shower or in the bath tub.Kinky pleasures also rate high as most 30 plus couples claim to be giving in to their fantasies of bondage, blindfolds and spanking on a weekend of debauchery.This is also the time when women are most likely to befriend gay male pals. Straight women love gay men; gay men love straight women. Swedish research is confirming just why the two groups get along so famously – they both have symmetrical brains. Straight men and lesbians have asymmetrical brain hemispheres.The 30s also mark the arrival of children in a married couple’s life, so the sex drive naturally dwindles. But, Cox points out that during pregnancy, couples have sex four to five times a month. Most put the brakes on their sex lives for about seven weeks after delivery, but four months later are back to four or five times of sex a month. Cox says six months after delivery, the average couple goes back to having sex three to five times a month. But incase you don’t fit the bill, remember getting disheartened ain’t gonna help. Remember it’s just a temporary period, so continue touching and cuddling and if your baby robs you of chances to have sex, indulge in quickies.Most women says Cox in her book experience higher orgasm rates. Ninety per cent of women past 30 regularly experience orgasm, compared to just 23 per cent of younger women.40 something Men in their 40s are more likely to experience erection problems. Also, this is the age when maximum number of men tend to be unfaithful. Also, men are more compelled in their 40s to watch more porn or indulge in sex chats. Women on the other hand get sexually very demanding, often being attracted to younger men.If you thought the 40s were about low libido, think again, while 40-somethings maybe having less sex than ever, the thrust has shifted from how many times in a week to an emphasis on better quality. You are more sure of your sexual needs in this age group and thus more likely to insist on passion play as opposed to a mere making out session.