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 is an enormous chasm between the relatively rich and powerful people who make decisions in government, business, and finance and our poorer neighbors who must depend on these decisions to alleviate the problems caused by their lack of power and influence.”
—Jimmy Carter (James Earl Carter, Jr.)
“Every young sculptor seems to think that he must give the world some specimen of indecorous womanhood, and call it Eve, Venus, a Nymph, or any name that may apologize for a lack of decent clothing.”
—Nathaniel Hawthorne (1804–1864)
“Pollicle dogs and cats all must
Jellicle cats and dogs all must
Like undertakers, come to dust.
Here a little dog I pause
Heaving up my prior paws,
Pause, and sleep endlessly.”
—T.S. (Thomas Stearns)