Gentlemen, start her engine. Your challenge is to master the art of the 15-minute orgasm.

It can be done. Researchers at the Kinsey Institute found that some women can orgasm after 10 to 20 minutes of sex. And aside from the instant spike in your approval ratings, there’s more sex in it for you. Research in the Journal of Sex and Marital Therapy found—somewhat unsurprisingly—that women with an increased likelihood of orgasm demanded more time between the sheets. Work in a day of subconscious foreplay to speed your girl to the finish line. Technically, this is cheating the 15-minute timeline, but if there’s no touching it doesn’t count.

Take her to live comedy or meet up on a day she has a spinning or yoga class. This preps her for orgasm because ab exercises stimulate the vagus nerve running through her pelvis.

As the countdown draws closer, have some quiet drinks back at your place. University of Florence research found that women who drink a glass or two of red wine are more aroused. When the bottle is empty, you can set the stop watch.

Oh!-minus 15 minutes: Turn her on with kisses

Invest at least three minutes of your total 15 in kissing. Studies by Lafayette College found that kissing reduces levels of the stress hormone cortisol, quickening the time it takes to turn you both on.

As you pay lip service, tilt your head to the right—scientists in Germany found this makes you seem more caring, flooding her system with the ‘connection’ chemical oxytocin, building trust and encouraging her to come quickly.

Don’t just kiss her mouth, though. William Cane, author of The Art of Kissing, surveyed 50,000 women and 96 percent picked a peck on the neck as the perfect warm up.

But don’t overdo it. “Slide off the lips to her neck occasionally so that her neck doesn’t become desensitised,” Cane says. Now you need to get coordinated. Each time you kiss her neck, remove another item of her clothes. Not only is this an important timesaver in your 15-minute window, but it lets you combat any body-confidence issues.

A study by the University of Cincinnati revealed that if your girl feels good when she’s naked, she’ll come sooner. “Compliment your partner on each part of her body as you undress it,” says psychotherapist Christine Webber. “Your approval will dramatically reduce her self consciousness.”

Oh!-minus 12 minutes: Tease her with your hands

She’s almost naked now, but keep her underwear on for another minute or so.

“Stroke and caress her through the fabric rather than going for gold,” says sex therapist Paula Hall. “Focus on building anticipation rather than going straight for direct stimulation.”

Feeling that time is short prevents a woman from reaching orgasm, adds Webber. Act like you’ve got forever, but then peel off her underwear and use a strawberry-scented lube.

This will get her excited—and make her more sensitive. Research at the US Association for Chemical Reception Sciences found the scent of strawberries alerts the senses.

Move your fingers in slow, circular motions just inside her vagina.

“Many women need attention focused on the outer third of the vaginal canal, where the G-spot, the clitoris, and the PS-spot (opposite the G-spot) can be reached,” says Emma Taylor of the sex blog emandlo.com.

Oh!-minus 10 minutes: Perform oral sex

Cunnilingus is the most reliable route to orgasm for many women. Lou Paget, author of The Big O, recommends the following method.
“With one hand, pull up her clitoral hood,” he says. “Then lick from side to side across its base, just above her clitoris.”
Place one finger of the other hand on her perineum (the area directly below the opening of her vagina). When you can feel her pre-orgasmic contractions, you’ll know you’re in the right place.

Oh!-minus 7 minutes: Missionary position—with a twist

A study in the Journal of Sexual Medicine clocked her average climax at seven minutes after penetration. That makes now the ideal time to climb politely aboard and start the final leg of her leg trembler.

“Avoid deep, thrusting, and instead try the Coital Alignment Technique,” says Taylor. To do it, start in the classic missionary then pull back so the base of your penis rests on her clitoris. Brace your feet against the foot of the bed and rock backwards and forwards rather than thrusting. Your penis gently massages her clitoris, which is great for her but also gives you slow, pulsating sensations that you control.
An alternative technique is sensory overload.

“Simultaneous G-spot and clitoral stimulation is far and away the fastest route to orgasm,” says Hall. Having her from behind is a good option for this because while you work the former, you can call up sex-toy reinforcements to take care of the latter.

Oh!-minus 1 minute: Keep doing what you’re doing

By now, your girl should be clawing at the sheets, but don’t be mistaken in thinking you need one final trick to clinch the result.
“Women hate too much chopping and changing of techniques,” says Joni Frater, co-author of Love Her Right.
“It distracts us, and takes our arousal back to the starting blocks,” Frater says.
You don’t really want to start over just before you reach the finish, do you?
“When you start doing something that causes a positive response, keep doing it, at exactly the same speed and pressure,” she says.
Save your new technique for next time. Since you’ve just orchestrated a 15-minute orgasm with shuttle-launch precision, that’s something she’ll be demanding very soon. So grab a breather and prepare for take-off—again.