Normal Human Sleep
Its physiology and functions
Keywords:
sleep, sleep cycle, circadian rhythm, REM sleep, NREM sleep, insomnia, sleeplessness, sleep hygiene, effects of insomnia, physiological changes in sleep, brain changes in sleep, functions of sleep, தூக்கம், தூக்க சுழற்சி, சர்க்காடியன் ரிதம், REM தூக்கம், NREM தூக்கம், தூக்கமின்மை, தூக்க சுகாதாரம், தூக்கமின்மையின் விளைவுகள், தூக்கத்தில் உடலியல் மாற்றங்கள், தூக்கத்தில் மூளை மாற்றங்கள், தூக்கத்தின் செயல்பாடுகள்Abstract
A good, balanced sleep is essential for human health and mental well-being. Humans spend one-third of their lives sleeping. A healthy sleep routine is a cycle of alternating sleep and wakefulness at regular intervals. During sleep, we are emotionally disconnected from our surroundings and enter a state of unconsciousness. Also, various changes occur in our physiological functions during sleep like changes in heart rate, blood pressure, body temperature, muscle activity, etc., and our body organs continue to function. Similarly, some functions continue to occur in our brain even when we are in deep sleep. According to the American Academy of Sleep Medicine, the amount of sleep varies with age. This article discusses in detail the normal physiology of sleep and the factors influencing our sleep cycle, especially the circadian rhythm. It also discusses the stages of the sleep cycle and the functions of sleep. The effects of sleeplessness and ways to improve sleep hygiene is also discussed here.
