kids.

cat.

Whatever it is, I wish I had more of it.

@supacase I’ll let you borrow my kid.

I’ve got Circadian rhythm.

Dog

I don’t have any pets or children, but my body hasn’t needed an alarm clock in the last few years. I always wake up right on time, no matter what the time is (and it is different depending on the day and the event).

My really loud alarm goes off, naturally I wake up.

Pee.
Still in my bladder, or wherever it resides. I get an annoying feeling when I have to pee, it always wakes me up. I drink a nice big glass of water before I go to sleep. Perfect alarm clock for me.

It might still have something to do with photoperiodicity, as we have not been liberated from night for such a very long time on an evolutionary scale.

@Sarcasm True, this happens to me a lot, but also my body has it’s own alarm clock, i get up everyday at the same time no matter what.

Morning wood

Nothing. I am a dead log. If it weren’t for “unnatural” sources I would sleep forever.

Circadian Rhythm as @gailcalled mentioned.

Light wakes people up as a signal the day is to begin.

I saw a study that smell is one of the best ways to wake up and they experimented with alarm clocks that emitted a scent rather than blasting a noise at you.

Pee, as well. All too frickin’ often as i get older.

@faye What sucks for me is once im up, im up, i can’t go back to sleep, so if i get up to piss at 5am then im up!

Circadian rhythm depends upon photoperiodicity. That’s why up to 35% of blind people are asynchronous with our 24-hour cycle.

“Photoperiodicity” for some; having to pee for others.

@janbb whadaya got, an overactive bladder?

Nah – I just like taking the piss out of you.

oh, a smart guy, eh?

A typical night’s sleep consists of a series of cycles in which the brain dives down into deep “slow wave” sleep, then drifts up into lighter REM sleep.. These cycles last roughly 90 minutes, so we cycle about 5 times in a full night’s sleep. After each cycle, we come close to waking, usually just rolling over and going back to sleep again, but sometimes actually waking up for a bit before dozing off again. With each progressive cycle, the slow wave portion gets shorter and the REM portion gets longer, so the last cycle in the morning is mostly light, dreamy REM sleep. After that 5th cycle, the need for sleep is (usually) satisfied, so when the brain surfaces to wakefulness, it’s more likely to stay there.

the vibrator.

Smarter than you.

why, I oughta…

what are you, Homer Simpson?

To build on what @Harp wrote….from what I understand deep sleep or slow wave sleep lasts longer when you are very young, that is why many children sleep like logs. As we get older a shorter percentage of our sleep is deep and so we become aware we need to pee, rather than sleeping through the urge. So even if you are in a nice quiet dark room and have a perfect bladder, the older you get, the more likely you will need to pee more often in the middle of the night.

@ItalianPrincess1217 That dude has nice hip bones. I really like hip bones.

@Allie Um, sure, that is what I was looking at too, his hipbones.

@cyndihugs Does the vibrator turn on by itself?

My internal clock. 6am on the dot.

Ok sometimes 7am.

@ChazMaz Same here…

Stress wakes me up. I always wake up early if I know I have stuff to take care of.

@chyna Yeah, well, I noticed them eventually.

The dog pushing her cold ass nose on my foot. Or if it’s not that, it’s all the middle and high schoolers walking by my house.

frasier (kitty cat) begging for food by walking over my face and meowing in my ear. over and over and over and over…....

@sarcasm it only vibrates when it wants to have a great time ~

it just happens to be in the morning.

@cheebdragon My daughter does the job well enough, but I would prefer something a little less startling than waking up to another person’s face an inch away from mine.

@supacase I agree. My son seems to use this method on a regular basis.

Physiology and

http://en.wikipedia.org/wiki/Chronobiology

With me, it’s…eh…natural.

I am as natural as can be! I keep a rooster in my backyard… very reliable… I call it my alarm cock!

First my alarm clock…...... then i unplug it….................. then my bunny…............. i go under the blankets…...then I’m late and that usually does it.

The sun is supose to wake you up. The light hits your body/eyes and sends a signal that it’s morning time. You can train your self to do the opposite though or at any other time with a schedule. I use to do it and would just wake up at 6:45 every morning with out an alarm clock and when I’d set one for some reason I’d wake up 2 minutes before. Guess my subconcious hated the sound lol.