the ORGASM GPS

Edge forward two inches
The G-spot is more frustrating to find than your lost car keys but worth the hunt, says Dr Yvonne Fulbright, author of Touch Me There (Hunter House). "When she gets aroused this erogenous zone becomes charged by one of the most powerful nerves in the body, the pelvic nerve. While a clitoral orgasm is felt mainly in the clitoris itself a G-spot orgasm can be felt throughout her lower body."
Route guidance: Programme your bedroom TomTom a little way past your usual destination. "The G-spot is on the front wall of her vagina, a few inches in," says Siski Green, author of How To Blow Her Mind In Bed (Pikatus). "It feels rough, a bit like a walnut and swells during arousal to the size of a 2p piece." Insert two fingers about an inch or two into her vagina with your hand resting against her pubic hair. "As you rub she can grind her clitoris against your palm for added stimulation," says Green. "Press the spot on her stomach where her pubic hair starts as this pushes her G-spot down towards your hand, increasing the pressure on it."


Proceed ahead for 2 minutes
Your next landmark is officially signposted as the "anterior fornix", but savvy locals call it "the A-spot". It's a patch of nerves much larger than and about two inches higher than the G-spot. It sends sexual signals to the brain, so touching her here speeds up the arousal process. "She'll be lubricated enough to have sex in 5-10 seconds and close to orgasm in 1-2 minutes," says Dr Chua Chee Ann, the sex therapist who reported the discovery in the British Journal of Sexual & Marital Therapy.
Route guidance: "Ask your partner to sit with her legs bent and pulled up towards her body before inserting the whole of your index finger into her vagina," says Fulbright. "Move your fingers past the G-spot and feel for a larger spongy area about two inches after this. She'll get instantly wetter. The A-spot responds best to light, gentle strokes."


Turn clockwise when safe
More seasoned travellers can take a shortcut via the U-spot. According to research by the University of Chicago this is a small patch of nerves above the clitoris, above and either side of her uretha. "Touching the U-spot often leads to female ejaculation," says Fulbright.
Route guidance: With a firm hand on the wheel, "make small circles around the U-spot with your finger, varying between clockwise and anti-clockwise motions," says sex therapist Barbara Keesling, author of All Night Long (Hunter House). "Ask her to suck your fingers before you begin; saliva lets them glide rather than drag on the U-spot, maximising her chances of having an orgasm. Don't probe the opening with your finger, though, there's a chance this could lead to a urinary tract infection."


Go round the roundabout
Rather than just providing interesting scenery, if properly stimulated the nipples can easily become an orgasmic A-road. "There are two reasons why this could happen," says Fulbright. "Touching her nipples causes them to fill with blood and get erect, sending sexual signals to the brain in the same way the genitals do. Nipple stimulation also leads to the release of oxytocin, the body's feel-good hormone, which triggers an orgasm.
Route guidance: "The most effective way to stimulate her breasts and nipples to orgasm is orally," says Fulbright. "As you suck her nipples point the tip of your tongue and use it to caress the nipple in a circular motion." The best time to try this is two weeks before her period when her breasts are at their most sensitive, says research by Columbia University.


Reach your destination in three minutes
When it comes to clitoral stimulation, it's safe to exceed the speed limit. But it's not a good idea to just hit the gas and hope for the best. "The clitoris is like the tip of an iceberg," says Dr Hilda Hutcherson, professor of Obstetrics and Gynecology at Columbia University. "It has sensitive tissue that runs down either side of the vagina and towards the back of her thighs in a wishbone shape." If you are just rubbing her on top you're missing out on stimulating these sensitive areas around and underneath.
Route guidance: "The Kivin method of oral sex gives 60% of women a faster and more intense orgasm," says registered sex therapist Dr Patti Britton (www.askthesexcoach.com). "Most women climax after three minutes." Put two fingers either side of her clitoris and slowly sweep your tongue back and forth feeling for two tiny bumps on each side of the hood. Slowly increase your speed then using a finger from your free hand press into her perineum. As you feel her nearing orgasm, transfer your tongue from the side to the head of her clitoris. Do not attempt any of this while wearing driving gloves.