As a man, one of the things I like about woman on top sex is the opportunity to just relax.

Don't get me wrong, I do enjoy having sex in almost every position except rear entry, which for some reason makes my penis bend uncomfortably.

As another way to make love, she can change the rhythm and pace of movement, and get as much or as little stimulation to her clitoris or vagina as she wishes always provided of course, that her man doesn't have a tendency to ejaculate too quickly, or conversely doesn't experience retarded ejaculation.

And when a woman isn't pinned down by her man being on top of her, she can move her body against his so that she either gets stimulation to her G spot internally, or stimulation to her clitoris externally.

And of course, as she leans further backwards or forwards, the way in which she moves can change: instead of riding up and down her partner's erect penile shaft, she can ride him backwards and forwards along the length of his shaft - and this may actually be important for a man whose penis normally stands rigid and upright against his belly, because when he is laying down, it may not be comfortable if his partner sits upright with his erection inside her pussy.

When the woman is on top, she can slow down the man's headlong race to orgasm and ejaculation by slowing down her pelvic movements - in short, reducing the stimulation that his penis receives from the movement of her tight vagina around his erection.

So, for example, I wouldn't want to have a session of woman on top sex if I was feeling lusty, rampant and needing to "get off".

It'd suit me much better when I felt relaxed, had less sense of sexual urgency, perhaps when I was tired or in the early morning.

Indeed, for some men it's a real struggle to give up control.

If you're one of them, and you feel, for example, the need to thrust even when your partner is on top doing all the work, then make a conscious decision to give up your dominant attitude to sex, and lie back and enjoy what your partner is giving you.

So here's what we probably all think of as the basic woman on top sex position.