3. Why do we have to "fall" asleep? Why can't we just decide to be asleep?

Why do we have to "fall" asleep? Why can't we just decide to be asleep?

Same. I'm pretty sure I don't have sleep debt, yet I find it fairly easy to go to sleep. As soon as I've finished the night routine (brush teeth, quick wash, etc) and lie on the bed - I'm out in like 10 minutes, max. Even if I have to travel and am sleeping in unfamiliar surroundings e.g. hotel, it's not hard for me to go to sleep.

I also find it easy to wake up - consciousness comes, I'm up. I usually stretch a bit to get the blood flowing (getting old, heh), before I tumble outta bed and head to the bathroom. I don't find it necessary to lie in, unless I actually slept late and thus incurred sleep debt. Otherwise even on holidays I'm up at the usual time, not groggy.

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