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Comment by jarin | Hacker News Reader

Strangely enough, I've found that since I increased my caffeine intake (to around 900-1200mg/day via energy drinks) I've been sleeping great. I usually go to sleep around 10pm, wake up naturally around 3am, and take a 1 hour nap around 3 pm. I've been drinking a lot of water as well, and I've had no problems focusing on work. I think the nap is the key though.

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That sounds like segmented sleep. You're channeling your ancestors.

http://www.nytimes.com/2006/02/19/opinion/19ekirch.html

How has 900-1200mg/day worked out for you? I considered it a lot when I was doing 500-600mg/day.

Pretty good, it's basically a max of 4 Engage energy drinks, or 2 of them and a mix of Nos or Monster. I don't feel jittery at all, but I do get a headache if I don't get any caffeine within a few hours of waking up.

I used to get a little heart weirdness (a weird beat once in a while), but I've cut down smoking to 1 or 2 cigarettes per day and started drinking more water and the heart weirdness has stopped happening.

At what point is the physical need for an artificial substance considered an addiction? Not criticizing, just honestly wondering.

Probably when it causes withdrawal symptoms?

As in the headache ? Isn't that a sign of withdrawal symptoms ?

I believe the clinical definition is when the benefits outweigh the negative consequences, but you continue using it anyways.

When the negatives outweigh the benefits.

Yes, what you said. /facepalm

How long have you been living that way?

About 3 months, with the occasional "sleep in till noon" on a weekend.

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