While the short answer might be another question - 'who cares why? Just get to it!' - there are actually a lot of benefits to having sex as soon as you get up. Outside of the big 'o' and just enjoying rolling around in bed with the skin-against-skin sensation, it's a great stress reliever and releases endorphins, which helps you start the day on the right foot. And why does it feel extra good? Because you're usually feeling extra horny, because your estrogen and testosterone levels.

If you're a guy, all this extra testosterone will help you last longer, and you'll even be harder, and because you both have a lot of energy since you've been sleeping (obviously helps if you're 'morning people'), you'll be raring to go.

So with all these positive, it seems like a no-brainer that a great way to initiate all this fun would be for the first one up to move things right into third base territory by whipping off the bedsheets and saying good morning with their tongue. But hold on, keep on reading just to make sure that tapping them on the shoulder first might actually be a better idea.

If you've been with this person more than a few times, and have also spent a few nights at each other's places, you'll definitely be in a much better position to decide whether a sexy, surprise wake-up will work or not. Even if the body is primed for sex in the morning, not everyone is a morning person, and not everyone will know exactly what's going on if they suddenly feel a tongue invading or moving around some very sensitive body parts and they exit dreamland.

Some people might like that feeling quite a bit, but are necessarily ready to start going at it all sexy-like in the morning. That might mean while they will appreciate what you're doing for them, they might not reciprocate with the same enthusiasm, or even at all. That's not to say that you're sexually incompatible, but maybe your partner just wants to take a whiz and sip on a coffee first. And that means you might have just given a great blowjob to them, but you'll have to wait a bit before they're in any condition to return the favour.

There's also the matter of having a light sleeper a partner. While they might be thrilled that you want to do this to them, any shuffling or weight adjustment on the bed could wake them up, and all your noble, naughty intention will all be for nothing. On a slightly personal note, once I got up early to use the bathroom, and as I came back to bed I saw my lover's foot sticking out from under the cover and blanket, so I decided to give it a quick kiss...and she instinctively almost kicked me in the face as she bolted up awake.

Well if you want to wake them up with the dirty stuff, and not the movements and sounds of you flailing under the sheets to get into position, you're first going to have to be very careful, and move very slowly. In fact, getting out of bed, and going to the foot of the bed and getting back in there might actually be the best way, since you're not moving around them as much, which increases the chances of waking them up.

If it's not too cold out and you just have light sheets over your bodies, it'll be a lot easier to raise them without suspicion and travel underneath them. Be careful how you bring your weight onto the mattress when you're down there, too.

There's also the matter of how they sleep! The ideal situation is them sleeping on their back with their legs splayed open, but chances are the thighs might be close together, and then suddenly you're trying to pry that legs apart without waking them (or freaking them out). And if they happen to be sleeping on their side, you might be completely out of luck unless your guy's already got a case of the morning wood.

As we've seen, a lot of things have to go in your favour to have a successful oral wake up call, and while it's a pretty amazing feeling to have that done to you, there's plenty of other ways to kick off a great session of morning sex. Even if you fall asleep in each others' arms, there's a chance that you might roll around at night and end up apart, so if you're up first, even bringing your arms around their sleeping body again can be a nice start. Running your hands over their chest, pinching the nipples lightly, or nibbling their ear or kissing the back (or front) of their neck is great too, and it's all a bit of a game, to see just what particular thing would wake them up.

And of course, if none of this (mostly) PG-stuff is working, you can always have your hand drift down, down their body and between their legs, and there you can use your fingers to do some of the dirty work. Sure oral sex might be the icing on the morning pleasure cake, but remember that there are a lot of other delectable treats on each others' bodies worth exploring when the rooster crows.

While occasionally a joke on some slightly more adult-oriented sitcoms and raunchy sex comedies, 'morning wood' has actually baffled scientists, as there is no agreed upon reason for why guys wake up with erections. Throughout the night it's normal for men to get erect three or four times, and that is typically associated with rapid eye movement (REM), which means they are most likely dreaming at that point. And so while that can explain why guys are hard if they just woke up from a dream, it's not the singular answer.

And of course they don't call it 'morning wood' in the media journals. No, the official term is 'Nocturnal penile tumescence'. Other theories involve having a full bladder, as the nerve endings on the bladder can stimulate the surrounding area, which is (obviously) near the penis. But this reason has come into question, because there is another phenomenon that involves woman having extra sensitive clitorises in the morning, and yes, it is called 'nocturnal clitoral tumescence' (once again, it doesn't exactly roll of the tongue, so maybe call it 'morning flower'?).

While most of what we talked about above seems to suggests a couple that has known each other for at least a little while, even if it's pretty clear that the two of you are just having a quick fling for whatever reason, one of the great perks of spending the night at either of your places (or a hotel room, or camping tent, or so many other options), is that you can still screw around in the morning as a final goodbye.

As mentioned above, as you're never really going to see them again, you may as well go for broke and wake them up somehow, and hope that they'll enjoy seeing you with your mouth full between their legs. After all, realizing that this isn't a sexy dream as you open your eyes is proof that there's no finer wakeup call than slipping under the sheets and stealthily moving down your partner's sexy body to careful position your head right between their legs and reminding them of what you were doing together only seven hours earlier. Forget the 'so-called' walk of shame as you walk through the streets in the clothes you were wearing yesterday. For what happened just a few minutes earlier, walk with your head held high!

Morning's can be very busy, and even if you're feeling particularly excited one of these days, you might legitimately not have the time to finish what either of you have started. Yes, it's always a bit exciting to arrive a bit late for work due to something like this, but there are other responsibilities that can't always be called in late for. This means that sometimes, even though you're waking them up with a steady tongue, you may have to leave it at that, and say 'rain check', which might be when you're both back home from work, or later that night, or - if you both really can't stand to wait - a nooner, where one of you heads to the other's place of work (or both back home) to finish what you started.

While this can reduce the wake up call to mere teasing, it's a wonderful way to keep the romance alive in the relationship, as both of you are most likely thinking quite a lot about finishing the job as soon as possible. And with the magic of modern technology, you can be teasing each other throughout the day with sexy photos and sexting thanks to your phones. Depending on the exact situation, you might even wait to complete the task the very next morning instead!

One of the perks of having morning sex is that it not only puts you in a great mood for the rest of the day, but that it gets you working out right from the start as well. All of a sudden your both flexing, thrusting, squatting, and holding yourselves in all sorts of yoga-like positions (if you're having a lot of fun, anyway), and all of this works up a sweat. You can feel the calories burn off you, and you haven't even thought about breakfast yet. And as soon as you both come down from the sexual high you leapt onto, you can both head to the shower and wash the sweat and anything else off your bodies.

If you've had sex the previous night as well, the likelihood is that you didn't clean yourselves up much after finishing, so you essentially slept in the sweat and anything else that was stuck to your bodies. Now fortunately there's absolutely no problem with that when you have a round of morning sex (it's not like whatever was on your body (sexual fluids, lube) can be a cause for concern as it remained there for seven or so hours), but it's good to remember that there might be a bit of a sweaty smell to both of you as you start to go at it all over again. This is why the shower after is extra important.

You've essentially just gotten up, and you've already both had intense orgasms, a great workout, and got all washed and dressed up for the day. No wonder everything that everything that comes after will be a breeze, you're both way ahead of schedule, and will definitely get a lot done.

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