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Tryptophan was found to reduce wakefulness after sleep onset and increase sleep efficiency as measured with actigraphy in all participants and improve subjective sleep quality scores in those carrying the genetic variant of interest
References Reed LJ
It does so by activating endogenous antioxidant systems and restoring mitochondrial integrity, which are both cornerstones of healthy aging
For me, that's invaluable because I can just operate at such higher productivity
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