https://www.supermemo.com/en/articles/sleep#Factors_that_affect_sleep https://www.supermemo.com/en/articles/sleep#Factors_that_aff... Then ctr+f melatonin and

https://www.supermemo.com/en/articles/sleep#Factors_that_affect_sleep https://www.supermemo.com/en/articles/sleep#Factors_that_aff... Then ctr+f melatonin and shortly lower there is some good information about how melatonin is not that great. Highly recommend the general article - incredible amount of information.