Q: How do you make the object of your affections fall in love with you? A: Take them for a ride on a rollercoaster



If you fancy someone and want them to fall for you the usual plan of action involves flowers, chocolates or just a few meaningful glances.



But if you really want to win hearts get them on a rollercoaster.



If there's not one within screaming distance, you could always try bungee jumping or white-water rafting instead.



Adventure sports cause a rush of a hormone which makes us fall in love

White-knuckle pursuits apparently create a rush of the hormone that makes us fall in love, a science conference heard yesterday.



Phenylethylamine is vital in the science of attraction, according to author Richard Robinson.



Mr Robinson, whose books include Why The One You Fancy Never Fancies You, said: ' Phenylethylamine is secreted when you see someone across the room that you really, really fancy.



'It is the hormone of euphoria, it is the hormone of joy and ecstasy.'



He told the British Association's Festival of Science in Liverpool that not wearing perfumes to let your own natural scent shine through was also important.



A person's smell provides clues about their genetic make-up. We are programmed to sniff out those whose genes are different to our own. This apparently helps ensure any children born will have broad immunity against disease.



Those looking to impress should also keep conversation to a minimum and concentrate on their appearance.



Research shows that 55 per cent of first impressions are based on how we look rather than what we say.



Getting off the sofa and out and about is also important.



'Meeting a lot of people is key,' Mr Robinson said. 'Sitting there moping and eating chocolate is not going to get you anywhere.'