Am I actually built to be a night owl?
CLOCK at rs1801260 is one of the most replicated variants in human chronotype research — it shifts your natural sleep timing earlier or later. MTNR1B at rs10830963 sets how your melatonin receptor responds to that signal. Together they explain why an 11pm bedtime is effortless for some people and a nightly fight for others.
CLOCK rs1801260MTNR1B rs10830963
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