Coldplay frontman Chris Martin has always been bemused by the female anatomy, and insists he had no idea how to give a woman an orgasm until recently.

The modest rocker, who is happily married to actress Gwyneth Paltrow, wishes he'd had an advisor to give him sex tips as he fumbled his way through his hormonally-charged youth.

He recalls, "I didn't really know what I was doing, I wanted someone to explain it to me."