[gharial]

>What changed? I hit my forties

It's pretty well documented that people in your age group are generally early risers and that people in young adulthood tend to be night owls. Getting older and having your preference change is hardly an indication that you were "never really" a certain way when you were younger.

I'm 20, don't drink caffeine or go out more than once or twice a month. Left to my own devices, in a few weeks I'd be falling asleep around 10AM and waking up at 5PM.

People are different. It doesn't mean they're wrong.

[StuffMaster]

>I'm 20, don't drink caffeine or go out more than once or twice a month. Left to my own devices, in a few weeks I'd be falling asleep around 10AM and waking up at 5PM.

I'd bet that might not be so without electronics :)

[bryanlarsen]

You're 20 years old, and you use computers after 9PM, I presume. Therefore the time shifting you experience is perfectly normal, and is not necessarily because you are a night owl.

[gharial]

You're presuming a bit too much there. I don't understand how you figure my age factors into some sort of false transition period or that my experience is any less real because it happens before an arbitrary age, though.