Sleep debt or sleep deficit is the cumulative effect of not getting enough sleep. A large sleep debt may lead to mental and/or physical fatigue.
There are two kinds of sleep debt; partial sleep deprivation and total sleep deprivation. Partial sleep deprivation occurs when a person or a lab animal sleeps too little for many days or weeks. Total sleep deprivation means being kept awake for days or weeks. There is debate in the scientific community over the specifics of sleep debt, and it is not considered to be a disorder.
Read more about Sleep Debt: Scientific Debate, Evaluation, Across Society
Famous quotes containing the words sleep and/or debt:
“The city sleeps and the country sleeps,
The living sleep for their time, the dead sleep for their time,
The old husband sleeps by his wife and the young husband sleeps by his wife;
And these tend inward to me, and I tend outward to them,
And such as it is to be of these more or less I am,
And of these one and all I weave the song of myself.”
—Walt Whitman (1819–1892)
“Pain and fear and hunger are effects of causes which can be foreseen and known: but sorrow is a debt which someone else makes for us.”
—Freya Stark (1893–1993)