I am 63 and have just been medically diagnosed. I can remember a handful of days when I was a child, where I woke up feeling like a superhero. I always hoped that I could have more of those, but as time went on, those days became fewer and farther between. The time I woke up feeling that way was when I was in college. When I had that one, I was quite surprised since I had not had one in years at that point. I suspected that would be the last one I would ever had, and I was correct as it turns out.
It's a relative thing of sorts to me. What I came to realize, is that "superhero" feeling I had when I awakened happy, focused, and full of energy compared to feeling like I had been exhumed every morning, is how normal people wake up. For all of my life that I can remember, I had had decent to poor days. I know this for two reasons 1) I can remember those handful of days waking up and feeling great, and 2) Observing other people and realizing that they did not have this issue.