Only when lack of sleep causes deficits in your daytime activity and gives you mental handicaps, it is considered to be insomnia, Letum, and maybe is worth to have a look at. I usually shut down the lights at 0230 or 0330, and raise a 0830. It is not insomnia, but a shifted sleep cycle. That can have psychological causes, too, but it must not be like that.
If you can arrange your life accordingly, I see no reason why you should think of it as a problem, practically or physically. The real disease is living to artificial rathms dictated by your clock. Eating when you are not hungry, but it is that and that time. Not being able to have a nap in the early afternoon, which normally most people's organism and physiology would demand, from a ceertain age on at the latest, and espcially if having had a noontime lunch.
Cats and dogs are much brighter than humans, concerning their living styles.
around 15% of the wetsern population is known to be so-called "owls", and another 15% are "larks". scientists doing research on sleep say that these people have "normally chnaged" day-and-night rythms, which cannot be chnaged and are not a question of habits, but predisposition.
P.S. Maybe you simply do not have enough work and exercise to become tired in the evening!
