I used to have deep, deep sleep and could sleep until 10am if my schedule permitted.
After I hit my 40s I always wake up at 5-6am. Always. Still tired, just can’t fall back to sleep. Hate it.
I think those “up early” Dads and Grandpas are full of crap. They want to sleep in too, but their stupid old bodies won’t let them, so they act like the’re so awesome for being up early. At, least, that’s what I do…