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  Dennis Hackethal commented on idea #5237.

Found this article illuminating (emphasis mine):

The gradual loss of energy during the day produces a drive to sleep in order to restore that energy. This is known as the homeostatic sleep drive. If the homeostatic process were the only one involved, a person would wake up fully energized and then gradually wind down over the course of the day, like a battery losing power. This would mean an uneven level of alertness during the day, with dangerously low alertness in the afternoon and evening. To counterbalance this, the SCN also regulates alertness by what is known as the circadian process. As the day goes on, and energy winds down, the SCN compensates for this by sending a stronger alertness signal to the brain and body. This alertness signal reaches a peak in the two hours just before bedtime. This zone of maximum alertness is known as the “forbidden zone for sleep” since the alertness signal makes sleep nearly impossible during that zone. When the usual bedtime is reached, the SCN begins to turn down its alertness signal to allow the body to sleep.

The article is on “Non-24-Hour Sleep-Wake Disorder”. I’m obviously no doctor so don’t take anything I say as advice or diagnosis. But from what you’ve said, I wonder if you have that. I think I have the same issue.

The article goes into several causes you could look into. For example, it says exposure to blue light in the morning can help reset one’s internal clock. But that requires a special type of cell on the retina. If those cells don’t work properly, then as far as your internal clock is concerned, you’re effectively blind.

#5237​·​Dennis Hackethal, about 2 hours ago

That said I still think you should go see a sleep doctor, Tyler.