Lack of Sleep
Sleep is a major factor in your mood. If you are sleep deprived you could become more irritable, angry, more prone to stress, and less energized throughout the day. "Studies have shown that even partial sleep deprivation has a significant effect on mood. University of Pennsylvania researchers found that subjects who were limited to only 4.5 hours of sleep a night for one week reported feeling more stressed, angry, sad, and mentally exhausted. When the subjects resumed normal sleep, they reported a dramatic improvement in mood."
Read more about this topic: Mood (psychology)
Famous quotes containing the words lack of, lack and/or sleep:
“There are moments when, faced with our lack of success, I wonder whether we are failures, proud but impotent. One thing reassures me as to our value: the boredom that afflicts us. It is the hall-mark of quality in modern men.”
—Edmond De Goncourt (1822–1896)
“In all the good Greek of Plato
I lack my roastbeef and potato.
A better man was Aristotle,
Pulling steady on the bottle.”
—John Crowe Ransom (1888–1974)
“I have had the accomplishment of something like this at heart ever since I was a boy.... So I feel tonight like the man who is lodging happily in the inn which lies half way along the journey and that in time, with a fresh impulse, we shall go the rest of the journey and sleep at the journey’s end like men with a quiet conscience.”
—Woodrow Wilson (1856–1924)