Sleep is necessary for the human body, but do you really know your sleep?
What are the stages of sleep?
Sleep can be divided into Rapid Eye Movement (REM) Sleep and Non-Rapid Eye Movement (NREM) sleep.
NREM is divided into Stage N1, Stage N2, and Stage N3 . Among them, Stage N1 is also called light sleep, and Stage N3 is also called slow wave sleep or deep sleep.
During this phase, the frequency of brain wave activity decreases, the sensory input of the cerebral cortex basically disappears, and tension is suppressed, making it harder to wake up.
In adults, deep sleep occurs in the first half of the night, usually accounting for 10-20% of the total sleep time throughout the night, and gradually decreases with age. Adults typically have 4 to 5 sleep cycles per typical night's sleep (around 8 hours).
What is deep sleep?
Deep sleep is one of the stages of sleep that is often harder to wake up from.
What is the difference between deep sleep and light sleep?
It is mainly reflected in the following three points:
The depth of sleep varies. In deep sleep, delta waves appear, muscle tone is suppressed, and it is usually difficult to wake up; in light sleep, the amplitude of alpha waves of the EEG decreases, and theta waves and beta waves gradually appear, and it is usually easier to wake up.
The rebound strength is different. When individuals fall asleep again after experiencing sleep deprivation, deep sleep is replenished more quickly, and the proportion of light sleep decreases.
Function is different. Light sleep has a relaxing effect, but at this time the brain can still be stimulated and has a certain alertness. During deep sleep, various life activities are minimized, which can promote energy recovery, enhance immune function, promote growth and development, and consolidate memory.
How long is deep sleep suitable for?
Adults' deep sleep occurs in the first half of the night, and the total time generally accounts for 10-20% of the total sleep time throughout the night, and gradually decreases with age. Taking 8 hours of sleep as an example, the deep sleep time per night is 1 to 2 hours.
If the duration of deep sleep is too short, it often means poor sleep quality and may lead to impaired daytime functions, such as sleepiness, fatigue, emotional depression, memory loss, and inability to concentrate.
What are the effects of chronic sleep deprivation?
Clinical insomnia patients and depression patients with insomnia often show reduced deep sleep; in addition, some physical diseases (chronic pain, obesity, etc.) and other factors (infants at home, shift work, stress, etc.) may also affect deep sleep .
Long-term lack of sleep can cause impaired daytime functions, such as sleepiness, fatigue, emotional problems, memory loss, inability to concentrate, etc. It may also lead to decreased immune function, affect growth and development, and cause endocrine and metabolic problems.
How to improve sleep?
Maintain good sleep habits (avoid drinking alcohol before going to bed;
Have a suitable sleeping environment, exercise properly during the day;
Avoid daytime naps, drink less tea or coffee in the afternoon;
control weight, and control the use of electronic devices before going to bed and a regular sleep time is guaranteed effective way of sleep quality;
In addition, we can monitor our daily sleep status with smart health watches, understand our own sleep status in time and make corresponding adjustments.
Veepoo RIG protects your sleep health in real time
Veepoo RIG smart watch, based on human body signals, continuously collects the human body's PPG signal, respiratory rate, limb micro-motion and other information, so as to synchronize the human body's physiological information, comprehensively compare and test data, and realize high-precision identification of sleep status.
Restore the user's entire sleep cycle. Including detailed sleep data such as falling asleep, light sleep, deep sleep, rapid eye movement period, awakening, etc., to provide users with more accurate sleep data and improve sleep.
At the same time, by continuously collecting the human body's PPG signal, respiratory rate, limb micro-motion, blood oxygen saturation and other information, Veepoo RIG can track and analyze sleep apnea syndrome, and protect the user's health in real time.