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 has been in our time a lack of reliance on language and a lack of experimentation which are frightening to anyone who sees them as symptoms. We know the phenomenon of stage-fright: it holds the player shivering, incapable of speech or action. Perhaps there is an audience-fright which the play can feel, which leaves him with these incapacities.”
—Muriel Rukeyser (1913–1980)
“A successful woman preacher was once asked “what special obstacles have you met as a woman in the ministry?” “Not one,” she answered, “except the lack of a minister’s wife.””
—Anna Garlin Spencer (1851–1931)
“Let me have men about me that are fat,
Sleek-headed men, and such as sleep a-nights.
Yon Cassius has a lean and hungry look;
He thinks too much. Such men are dangerous.”
—William Shakespeare (1564–1616)