Sleep is one of the basic human needs which according to experts function is more important than food. Because someone will be able to survive longer without food than without sleep. With no food at all, a person can still survive about 40 days, without a drink a person can survive for about 3 days, without an air of survival ability in just minutes, while without sleep a person can only survive for 11 days. This shows that human vital needs if sorted are: air, water, sleep, and food
Sleep alone in the view of experts has many definitions. Some say that sleep is a condition of the subconscious, which with the condition that one can be awakened through the provision of sensory stimuli and with other types of stimuli.
There is also a opinion that sleep is a physiological process with alternating cycles and has a longer period of kejerjagaan. While some experts suggest that sleep is a relatively selfless condition with repetitive sequence and minimal activity, and awareness varies with physiological changes, and decreases response in response to external stimuli.
Negative Impact of Sleep Deprivation
Given the importance of sleep for the needs of the human body, those who often sleep late at night, in itself must be ready to face the various risks that must he received due to lack of sleep. The negative effects of late night sleep or lack of sleep include:
Reduced Concentration
The sleep cycle can strengthen the memory in the mind that helps one in concentrating. So that those who often sleep late at night will be disturbed concentration, reasoning, vigilance, as well as its ability to solve problems.
Impact on Health
Because sleep plays a role in blood circulation, improve the body's cells, and help the production of enzymes and hormones, then those who sleep less by itself will be at risk of health problems. In fact, if sleep deprivation occurs continuously and is at a chronic stage, then the health problems that will appear are also very serious, such as:
high blood pressure,
heart disease,
stroke,
diabetes, and so on.
Lowering Sexual Passion
Levels of libido and sexual arousal in men and women will decrease due to lack of sleep, because their energy is drained and their blood pressure increases. A study published in the Journal of Clinical Endocrinology & Metabolism states that men who suffer from breathing problems so sleep is disturbed (sleep apnea), low testosterone levels at night, while testosterone itself has a role in encouraging one's sex libido.
Become forgetful
A study conducted in France and America found that "sharp wave ripples" are responsible for strengthening the memory of the brain, and transferring existing data from the hippocampus to the brain's neocortex, where all long-term memories are stored. Sharp wave ripples are common during sleep. That is why, those who often sleep late at a certain time will be forgetful.