Endogenous melatonin rhythm timing

Endogenous melatonin rhythm timing is associated with total sleep time and sleep efficiency in humans.

“Total sleep time and sleep efficiency were correlated with the timing of the endogenous melatonin rhythm”

Humansage-related sleep-maintenance insomnia

The role of melatonin and circadian phase in age-related sleep-maintenance insomnia: assessment in a clinical trial of melatonin replacement

Sleep·1 Jan 1998