Hello roses415: Unfortunately, the Skeezyks doesn't really know anything about this. I do experience some of what you describe. I don't have difficulty waking up. I have more difficulty sleeping. But when I get up in the morning my body also feels like "a bag of bricks." I ache all over, I tend to feel a bit dizzy & all I can think of is how badly I want to go back to bed... even though I know I probably wouldn't go back to sleep. (I also used to have sleep paralysis.) I'm an older person now & no longer employed. I typically get up around 6:30 or 7 AM. But I don't really wake up to any significant degree until around noon.

I don't really know why this happens. I have struggled with depression & anxiety for many years. And so I presume it perhaps has something to do with that. I imagine that, over time, the body just gets worn down to the point where it just begins to fray around the edges, so to speak.

I don't know anything about hypersomnia. What you describe sounds to me like a medical condition... something that perhaps should be addressed by physicians at a sleep clinic? Beyond that, I wonder if perhaps your work schedule is contributing to your problem... not that it is the cause of it. But since you have this underlying condition to begin with, perhaps your work schedule is exacerbating the problem? But, of course, I'm just guessing. Perhaps some other members, here on PC, will be able to offer some more useful suggestions.