Assertion: melatonin | /r/HasProperty | released into the bloodstream
Facets:
value: at night
type: TEMPORAL
Source sentences:
text: Melatonin is a hormone which, when released into the bloodstream, leaves you feeling less awake and alert as it promotes the transition from wakefulness to sleep in both your brain and your body.
text: Melatonin is released into the brain and bloodstream in response to the level of ambient light—low melatonin during the day and high melatonin at night.
text: When melatonin is released into the bloodstream at night (naturally, or by way of a supplement), it can help keep the so-called “body clock” on track for sleep.