“Do but consider what an excellent thing sleep is; it is so inestimable a jewel that, if a tyrant would give his crown for an hour’s slumber, it cannot be bought; of so beautiful a shape is it
In a study by Van Mill and colleagues (2013), the authors examined the impact of sleep disturbances on the course of anxiety and depressive disorders. The sleep durations of over 1,000 individuals with depressive and/or anxiety disorders, over a period of two years, were examined.
When we sleep, we undergo different stages of sleep. The deepest stage of sleep is REM (rapid eye movement) sleep. It has been called so because it can be recognized by rapid, random eye movements. This stage of sleep normally occurs in the early hours