You may be suffering from Vitamin D deficiency. I know this bc I was always a "night owl", but could never get up in the afternoon and was tired all day, but wired at night. Anyway, I always thought I was an insomniac and in college, I signed up for an insomnia study at the sleep center at Cornell Medical in NYC. Well, I went there and they asked me a bunch of questinos and said, "well the bad news is that you dont qualify for the insomnia study...good news is that we know whats wrong". They diagnosed me with a little-known sleep disorder called DSPS or Delayed Sleep Phase Syndrome. Basically, your biological clock is out of whack. Your biological clock is set by the intake of Vitamiin D. The ONLY way to get Vitamin D naturally is by sunlight. To reset your clock, you basically have to get in about 10,000 luxes of light (a measurement of sunlight) for about 45 min a day for a week. This means taking a 1/2 hour-45 min walk in the mornings or just spending time outside on a normal day. You can also buy special lamps for this. This should help you sleep better after about a week. Look it up online, its quite interesting. I hope this helps bc I wish I knew this about 10 years ago...it drastically changed my life. Feel free to message me with anything!