Ok, does one’s body adjust to the time of day for effectiveness of rest???
Like if you should get around 8 hours of sleep a day, does your body respond differently when the 8 hours is at a certain time? for example 9pm or 9am (for graveyard shifts)?
Yes, timing of rest does matter. While it is conveivable that you could train your body to a different schedule than night only sleep, the evidence isn’t that conclusive.
Your body’s sleep quality is in part determined by your circadian rhythm. Your circadian rhythm is based in part on body temperature and sunlight amount. Therefore, graveyard working would be difficult. There would be little to no sunlight, and outside temperature is less while sleeping it is more, which is the opposite of what you need. I remember seeing research on a dramatic increase in health problems/risk for people that work graveyards but don’t remember where.
Also, the circadian rhythm is most trainable for wake-up time. Therefore to get the body attuned it’s most important to always wake up at the same time. There’s an article in the archives here called “the Big Sleep” 2003, it might help but I think I’ve seen some newer research that disputes some of it.
Anyway, the best thing you can do for a good night’s sleep is to exercise (especially cardio) and get sunlight.
Also, this may not be what you are looking for but is related to the thread. I saw a doctor speak on how to “reset” your sleep cycle. Instead of trogging around half asleep and using as little light as possible until you are more awake, use a bright light immediately upon waking up. If you have a set of bright vanity lights above your mirror, they would work better than just soft over-head bulb. Then as long as you are getting adequate sleep for your body (6-9 hours) your cycle should get more consistent after a few weeks.