question: why aren't you really thristy after 7 hours of sleep?
comment: You aren’t active. Your body is doing less and slowing down some processes when you sleep. You aren’t using as much of the body’s resources, so you don’t need to replenish much.
passages: In a study of 19 healthy adults, the minute ventilation in NREM sleep was 7.18 ± 0.39(SEM) liters/minute compared to 7.66 ± 0.34 liters/minute when awake.
  
  Section::::Normal.:Steady NREM (Non-REM) sleep.:Rib cage and abdominal muscle contributions.
  
  Rib cage contribution to ventilation increases during NREM sleep, mostly by lateral movement, and is detected by an increase in EMG amplitude during breathing. Diaphragm activity is little increased or unchanged and abdominal muscle activity is slightly increased during these sleep stages.
  
  Section::::Normal.:Steady NREM (Non-REM) sleep.:Upper airway resistance.
   In a study of 19 healthy adults, the minute ventilation in REM sleep was 6.46 +/- 0.29(SEM) liters/minute compared to 7.66 +/- 0.34 liters/minute when awake.
  
  Section::::Normal.:Steady REM Sleep.:Rib cage and abdominal muscle contributions.
   Upper airway resistance is expected to be highest during REM sleep because of atonia of the pharyngeal dilator muscles and partial airway collapse. Many studies have shown this, but not all. Some have shown unchanged airway resistance during REM sleep, others have shown it to increase to NREM levels.
  
  Section::::Normal.:Steady REM Sleep.:Arterial blood gases.
  
  Hypoxemia due to hypoventilation is noted in REM sleep but this is less well studied than NREM sleep. These changes are equal to or greater than NREM sleep
  
  Section::::Normal.:Steady REM Sleep.:Pulmonary arterial pressure.
  
  Pulmonary arterial pressure fluctuates with respiration and rises during REM sleep.
   Section::::Ideal duration.
  
  Human sleep needs vary by age and amongst individuals; sleep is considered to be adequate when there is no daytime sleepiness or dysfunction. Moreover, self-reported sleep duration is only moderately correlated with actual sleep time as measured by actigraphy, and those affected with sleep state misperception may typically report having slept only four hours despite having slept a full eight hours.
  
  Researchers have found that sleeping 6–7 hours each night correlates with longevity and cardiac health in humans, though many underlying factors may be involved in the causality behind this relationship.
   Homeostatic functions, especially thermoregulation, occur normally during non-REM sleep, but not during REM sleep. Thus, during REM sleep, body temperature tends to drift away from its mean level, and during non-REM sleep, to return to normal. Alternation between the stages therefore maintains body temperature within an acceptable range.
  
  In humans the transition between non-REM and REM is abrupt; in other animals, less so.
   "Sleep" received wide acclaim from contemporary music critics. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream critics, the album received an average score of 79, based on 7 reviews, which indicates "generally favorable reviews".
   Airway resistance increases by about 230% during NREM sleep. Elastic and flow resistive properties of the lung do not change during NREM sleep. The increase in resistance comes primarily from the upper airway in the retroepiglottic region. Tonic activity of the pharyngeal dilator muscles of the upper airway decreases during the NREM sleep, contributing to the increased resistance, which is reflected in increased esophageal pressure swings during sleep. The other ventilatory muscles compensate for the increased resistance, and so the airflow decreases much less than the increase in resistance.
  
  Section::::Normal.:Steady NREM (Non-REM) sleep.:Arterial blood gases.
   Sleep increases the sensory threshold. In other words, sleeping persons perceive fewer stimuli, but can generally still respond to loud noises and other salient sensory events.
  
  During slow-wave sleep, humans secrete bursts of growth hormone. All sleep, even during the day, is associated with secretion of prolactin.
   Section::::Assessment.
  
  Assessing sleep hygiene is important to determine whether an individual has inadequate sleep hygiene disorder. The diagnostic assessment is usually conducted using clinical interview and supplemented by self-report questionnaires and sleep diaries, which are typically kept from one to two weeks, to record a representative sample data. There are also computerized assessments such as the Sleep-EVAL system, which can be employed in the diagnostic process. It features 1,543 possible questions automatically selected according to the individual's previous answers.
   Section::::Commercial performance.
   REM sleep is considered closer to wakefulness and is characterized by rapid eye movement and muscle atonia. NREM is considered to be deep sleep (the deepest part of NREM is called slow wave sleep), and is characterized by lack of prominent eye movement or muscle paralysis. Especially during non-REM sleep, the brain uses significantly less energy during sleep than it does in waking. In areas with reduced activity, the brain restores its supply of adenosine triphosphate (ATP), the molecule used for short-term storage and transport of energy. (Since in quiet waking the brain is responsible for 20% of the body's energy use, this reduction has an independently noticeable impact on overall energy consumption.) During slow-wave sleep, humans secrete bursts of growth hormone. All sleep, even during the day, is associated with secretion of prolactin.
   Section::::Normal.:Steady NREM (Non-REM) sleep.
  
  Section::::Normal.:Steady NREM (Non-REM) sleep.:Ventilation.
  
  Breathing is remarkably regular, both in amplitude and frequency in steady NREM sleep. Steady NREM sleep has the lowest indices of variability of all sleep stages. Minute ventilation decreases by 13% in steady stage II sleep and by 15% in steady slow wave sleep (Stage III and Stage IV sleep). Mean inspiratory flow is decreased but inspiratory duration and respiratory cycle duration are unchanged, resulting in an overall decreased tidal volume.
   Practice of sleep hygiene and knowledge of sleep hygiene practices can be assessed with measures such as the Sleep Hygiene Index, Sleep Hygiene Awareness and Practice Scale, or the Sleep Hygiene Self-Test. For younger individuals, sleep hygiene can be assessed by the Adolescent Sleep Hygiene Scale or the Children's Sleep Hygiene Scale.
  
  Section::::Recommendations.
  
  Clinicians choose among recommendations for improving sleep quality for each individual and counselling is presented as a form of patient education.
  
  Section::::Recommendations.:Sleep schedule.
   Section::::Muscle movements during non-REM.
  
  During non-REM sleep, the tonic drive to most respiratory muscles of the upper airway is inhibited. This has two consequences:
  
  BULLET::::1. The upper airway becomes more floppy.
  
  BULLET::::2. The rhythmic innervation results in weaker muscle contractions because the intracellular calcium levels are lowered, as the removal of tonic innervation hyperpolarizes motoneurons, and consequently, muscle cells.
   REM Stage (REM Sleep – 20–25% of total sleep in adults): REM sleep is where most muscles are paralyzed, and heart rate, breathing and body temperature become unregulated. REM sleep is turned on by acetylcholine secretion and is inhibited by neurons that secrete monoamines including serotonin. REM is also referred to as "paradoxical sleep" because the sleeper, although exhibiting high-frequency EEG waves similar to a waking state, is harder to arouse than at any other sleep stage. Vital signs indicate arousal and oxygen consumption by the brain is higher than when the sleeper is awake. REM sleep is characterized by high global cerebral blood flow, comparable to wakefulness. In fact, many areas in the cortex have been recorded to have more blood flow during REM sleep than even wakefulness- this includes the hippocampus, temporal-occipital areas, some parts of the cortex, and basal forebrain. The limbic and paralimbic system including the amygdala are other active regions during REM sleep. Though the brain activity during REM sleep appears very similar to wakefulness, the main difference between REM and wakefulness is that, arousal in REM is more effectively inhibited. This, along with the virtual silence of monoaminergic neurons in the brain, may be said to characterize REM.
   Section::::Career.
   Sleep hygiene strategies include advice about timing of sleep and food intake in relationship to exercise and sleeping environment. Recommendations depend on knowledge of the individual situation; counselling is presented as a form of patient education.
   The album received favorable reviews. His talent was praised for the album. Schmidty of BoxCarFlow said "Sleeping In Class showcases an enormous talent with tremendous promise." While iHipHop wrote "Casey brings a much more conventional flow and attitude to his work." His lyrical delivery was praised as iHiphop wrote "He works clever turns of phrase, setting up decent punch lines and flowing with a decent amount of energy."
   Sleep is divided into two broad types: non-rapid eye movement (non-REM or NREM) sleep and rapid eye movement (REM) sleep. Non-REM and REM sleep are so different that physiologists identify them as distinct behavioral states. Non-REM sleep occurs first and after a transitional period is called slow-wave sleep or deep sleep. During this phase, body temperature and heart rate fall, and the brain uses less energy. REM sleep, also known as paradoxical sleep, represents a smaller portion of total sleep time. It is the main occasion for dreams (or nightmares), and is associated with desynchronized and fast brain waves, eye movements, loss of muscle tone, and suspension of homeostasis.
   During a night of sleep, humans usually experience about four or five periods of REM sleep; they are shorter (~15 min) at the beginning of the night and longer (~25 min) toward the end. Many animals and some people tend to wake, or experience a period of very light sleep, for a short time immediately after a bout of REM. The relative amount of REM sleep varies considerably with age. A newborn baby spends more than 80% of total sleep time in REM.
   Section::::Critical reception.
   Section::::Normal.:Steady REM Sleep.:Effect of arousals.
  
  Arousals cause return of airway resistance and airflow to near awake values. Refer arousals in NREM sleep.
  
  Section::::Sleep and Breathing in High Altitudes.
   Sleep is important in regulating metabolism. Mammalian sleep can be sub-divided into two distinct phases - REM (rapid eye movement) and non-REM (NREM) sleep. In humans, NREM sleep has four stages, where the third and fourth stages are considered slow-wave sleep (SWS). SWS is considered deep sleep, when metabolism is least active.
  
  In normal metabolic function, the pancreas releases insulin after blood glucose levels raise. Insulin signals muscle and fat cells to absorb glucose from food. As a result, blood glucose levels return to normal.
   Sleep and metabolism
  
  Sleep is important in regulating metabolism. Mammalian sleep can be sub-divided into two distinct phases - REM (rapid eye movement) and non-REM (NREM) sleep. In humans and cats, NREM sleep has four stages, where the third and fourth stages are considered slow-wave sleep (SWS). SWS is considered deep sleep, when metabolism is least active.
   Sleep is mentioned in "Never Say Alan Again", an episode from the second series of "I'm Alan Partridge". When Michael's Americanophile friend Tex mentions that "[my idol] has gotta be Wayne", Alan mistakenly concludes he means Sleep. Tex tries to correct this misconception by drawling "Get on yer horse and drink yer milk" in an approximation of John Wayne's voice, but Alan is merely further confirmed in his belief that Sleep is the man to whom Tex is referring.
  
presuppositions: It is abnormal to not be thirsty after waking from 7 hours of sleep. 
corrections: People don't require as many resources during sleep as during waking hours since the body slows down processes.
raw_presuppositions: It is abnormal to not be thirsty after waking from 7 hours of sleep.  People's bodily processes consume as much water during sleep as during waking hours.
raw_corrections: People don't require as many resources during sleep as during waking hours since the body slows down processes. People don't require as many resources during sleep as during waking hours since the body slows down processes.