Sleep time for adult women

The sleep time for adult women is about 8 hours, and it cannot be too short. If you are always in a state of lack of sleep, it will induce various problems. Most of them will experience memory decline and inability to concentrate completely. Therefore, you still need to ensure deep sleep to improve your brain's intelligence and allow you to live and work normally.

Sleep is a spontaneous and reversible resting state that occurs periodically in higher vertebrates, characterized by a decrease in the body's responsiveness to external stimuli and a temporary interruption of consciousness. About 1/3 of a person's life is spent sleeping. When people are sleeping, their brains and bodies can rest, recuperate and recover. Appropriate amount of sleep helps people with their daily work and study. Scientifically improving sleep quality is the guarantee for people's normal work, study and life.

Brain power.

Slow-wave sleep

According to the characteristics of human brain waves, this phase is usually divided into four different periods, corresponding to the process of sleep from light to deep. The first stage presents low-voltage brain waves with a mixture of fast and slow frequencies, with a predominant frequency of 4 to 7 cycles/second. It often occurs at the beginning of sleep and during brief awakenings at night.

Non-rapid eye movement sleep is more common in the first half of the night. This is mainly because after a day of using the brain, ordinary people’s brain power is greatly depleted, which causes stress and damage to brain cells and brain tissue. The biological clock will naturally induce us to sleep, lower the brain temperature, and enter the repair stage, which is very important for maintaining life. There will be more rapid eye movement sleep in the second half of the night, which is related to study and work. When you experience many scenes, whether good or bad, in a day, you must incorporate them into your memory. Non-rapid eye movement sleep includes learning new things and integrating daytime emotions.

Paradoxical sleep

Paradoxical sleep refers to the situation in which the two eyeballs under the eyelids show regular left and right movement during sleep. This process occurs in a regular and staggered pattern throughout the night, which is called a sleep cycle in sleep medicine. There are 4 to 5 sleep cycles in one night. Non-rapid eye movement sleep is maintained more in the first half of the night and almost non-existent in the second half of the night; but rapid eye movement sleep becomes more and more in the second half of the night.