According to Dr David Lewis, chocolate is better than a passionate kiss, causing a more intense and longer-lasting buzz, and doubling the heart rate.

(It is well known that chocolate contains phenylethylamine which can raise levels of endorphins, the pleasure-giving substances, in the brain. It also contains caffeine which has a stimulatory effect, which explains why chocolate can give people a buzz, and why people can become addicted to it. Dr Lewis said that allowing it to melt on your tongue could be the secret to maximising the buzz. Of course no one knows who paid for this research to be carried out. Hmmm I wonder!)