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A study of workers (n=117) found that the average peak nighttime melatonin levels for day workers was 15.4 ng/mg creating/hr, and the average peak melatonin for night shift workers was almost 50% less (10.9 ng/mg).[ref] Other sources point to the differences in melatonin due to age

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It might say the same molecule on the front of the bottle, but its rare to find it in the bottle

Relaxing habits such as meditation, gentle stretching, or deep breathing may support detoxification, cellular recovery, and restful sleep