About 4 hours is ideal for me. If I sleep more than 5, I'm groggy all day. I usually sleep from around 2 AM to 6 AM.
I usually take a short 30 minute nap after lunch.
I recently read that they've isolated a specific gene that allows some people to require about half as much sleep as a normal person.
It may seem weird to most, but for me the idea of sleeping 8 hours is crazy. I wake up feeling like I came out of a coma. I needed the full night when I was young but by the time I was about 15-16 I just didn't sleep much at all.
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