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There's nothing about "asian" genetics that causes this, but my experience in Taiwan, China, and Japan showed me that people in those countries typically don't get 8 hours of sleep every night, more like 5-6. It's ubiquitous, so do it your whole life and you get good at functioning with less sleep than it has been demonstrated humans need, and you also get good at making up the difference with turbo power naps.

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