I wish I was like this. It takes me at least an hour to actually fall asleep, even if I'm so tired that I can't stay up to actually do anything.

I have been at both extremes. For as long as I can remember I have had insomnia. It is a miserable disorder. At night I would endlessly ruminate about personal relationships, how I could help others, and the occasional work problems.

Recently I moved to the Bay Area. I work alone and have few friends. With few relationships, for the first time in my life I started falling asleep in under 10 minutes. It's a gift but it comes with a price. When I started mentoring at-risk high-school students, I found the insomnia returned, so I quit being a mentor after a few months.

Perhaps with more conditioning, insomnia won't relapse so easily.

Edit: grammar

Since this is the internet, I am free to reply with hearsay... I read that if you fall asleep that fast, you might not be getting enough sleep the previous night.

I've heard the same thing from doctors; falling asleep in less than 10 minutes is generally considered indicative of sleep issues of one sort or another.

OTOH, ~90% of the population uses caffeine regularly, and given that it takes ~48 hours to completely purge your body of caffeine, I think that saying is only relevant to caffeine drinkers.

Coffee or no coffee, 10h sleep or 4h, it's all the same for me.

Since this is the internet, I am free to reply with anecdata. I get 7.5 hours of sleep just about every night, and I fall asleep in less than 15 minutes more than 90% of the time. I am a coffee addict, but I keep it to 2-3 cups per day (usually). Even the occasional after-dinner cup doesn't usually keep me up.