Patients must be able to read and understand English
Participants must sign the informed consent form
Participants must have a wrist-actigraphy-based average TST (total sleep time) ≥ 6 hours per night (measured over 7 consecutive days) occurring between 22:00 - 08:00
You may not be if
Known history of severe psychiatric or cognitive conditions, for example mania, schizophrenia, or mental retardation
Shift work, defined as recurring work between 22:00-05:00
History of clinically significant obstructive sleep apnea
Transmeridian travel across ≥2 time zones in the two weeks prior to the blood draws and one week after,
