It would be really nice if people didn’t just blind-link. It’s much nicer to have some idea what I’m looking at to decide if it’s worthwhile. For instance, “A previous thread in which I gave my own solution to the problem” or “An article about a new technology designed to solve this problem.” Not every link is interesting or relevant to every person, and it’s really discourteous not to spend a sentence or two explaining it, especially as the two URLs in question don’t give much clue as to the contents of their destinations.
Anyway, I’ve read stuff to suggest that people’s natural day-night cycles actually vary some around 24 hours (the notion that everyone actually has a natural 25-hour cycle has been disproven.) If your cycle is a little short of a day, you’ll feel tired in the evenings and end up getting up early and quite refreshed in the mornings. If it’s a little long, on the other end, you won’t feel tired at bedtime and you won’t feel like getting up. Essentially, most people’s cycles just are not exactly 24 hours, so you’ll always end up struggling a little bit around the natural rhythm. Most people end up being either morning or night people, and while your cycle tends to shorten with age (which is why old people get up so damn early in the morning), there’s probably not much more to be done.