4. You don’t need 8 hours of sleep
How much sleep someone needs is highly individualized, some need 6 hours some need 9 hours, but 8 hours of sleep is not necessarily ideal for most individuals. You can determine the amount of sleep you need by starting with the time you must wake up by, or the “socially determined wake time”, counting back 7.5 hours and go to bed at that time. Then see if you are able to wake up naturally without an alarm at your socially determined wake time.
If you end up waking up too early then you need to go to bed a little later, if you sleep past your socially determined wake time then you need to go to bed earlier.