Dear sir, since many days, approx one year, I am facing sleep issues. My working environment is comfortable. There is no stress as such but I m getting awaken early in the morning sometimes at 4 or 5. After that not able to sleep back easily. Hence not feeling fresh in morning. Full day there is some kind of light headness at top. I go to sleep at 10.30 to 11 and able to sleep quickly but gets awaken early and hence think that I m not getting sufficient sleep. What kind of this disorder is? What is remedies on this. PL suggest.