Sleep debt — is the cumulative effect of not getting enough sleep. A large sleep debt may lead to mental and/or physical fatigue. There is debate in the scientific community over the specifics of sleep debt. Scientific skepticism There is debate among… … Wikipedia
Sleep deprivation — Classification and external resources eMedicine topic list … Wikipedia
fall — fall1 [ fɔl ] (past tense fell [ fel ] ; past participle fall|en [ fɔlən ] ) verb intransitive *** ▸ 1 move downward quickly ▸ 2 become lower in amount ▸ 3 change to another state ▸ 4 lose power/control ▸ 5 hang down ▸ 6 belong to group/activity… … Usage of the words and phrases in modern English
sleep — {{Roman}}I.{{/Roman}} noun 1 condition of rest ADJECTIVE ▪ deep ▪ light ▪ much needed ▪ I m off to bed for some much needed sleep. ▪ adequate … Collocations dictionary
fall */*/*/ — I UK [fɔːl] / US [fɔl] verb [intransitive] Word forms fall : present tense I/you/we/they fall he/she/it falls present participle falling past tense fell UK [fel] / US past participle fallen UK [ˈfɔːlən] / US [ˈfɔlən] 1) to move quickly downwards… … English dictionary
sleep — sleepful, adj. sleeplike, adj. /sleep/, v., slept, sleeping, n. v.i. 1. to take the rest afforded by a suspension of voluntary bodily functions and the natural suspension, complete or partial, of consciousness; cease being awake. 2. Bot. to… … Universalium
fall*/*/*/ — [fɔːl] (past tense fell [fel] ; past participle fallen [ˈfɔːlən] ) verb I 1) to move quickly downwards from a higher position by accident I keep falling off my bike.[/ex] It s not unusual for small children to fall out of bed.[/ex] 2) to go… … Dictionary for writing and speaking English
fall asleep — verb a) To pass from a state of wakefulness into sleep. John Doe, fell asleep 1 January 2001. b) To die Syn: drift off, drop off, go to sleep … Wiktionary
Sleep disorder — Classification and external resources ICD 10 F51, G47 ICD 9 … Wikipedia
Sleep-deprived driving — is the operation of a motor vehicle while being cognitively impaired by a lack of sleep. Sleep deprivation is a major cause of motor vehicle accidents, and it can impair the human brain as much as alcohol can. According to a 1998 survey, 23% of… … Wikipedia
