Water is an important part of human body. People and various animals can maintain life and exercise, that is, water and various life-sustaining elements are constantly circulating in the body for metabolism. Once the human body is short of water, there will be physical dysfunction and disorder, which can lead to many serious diseases and even life-threatening. Knowing the water in human body and mastering the knowledge of scientific drinking water are of great significance for ensuring health and preventing diseases.
Don't think that not thirsty means that your body is not short of water, and all parts of your body will send out various alarm signals to tell you that it is time to replenish water! Today, I will take you to understand the important role of water in human body and learn how to drink water scientifically. How much is appropriate to drink? When will it be ready?
Body water shortage 19 signal
thirsty
The most obvious sign that your body is short of water is that you feel thirsty and are short of water.
Oliguria, yellow urine
Another signal to judge water shortage is that with the increase of water shortage in the body, the degree of oliguria and yellow urine gradually deepens.
Irritability, general weakness, elevated body temperature, decreased blood pressure and skin loss of elasticity.
Body water loss reaches 10% of body weight.
die
Water loss exceeding 20% of body weight will lead to death.
1. Dry mouth and swollen tongue
The first sign of water shortage in the body is thirst. Dehydration can lead to dry mouth and swollen tongue, so drink water in time.
2. Dark yellow urine
With the decrease of blood pressure, the body tissue is short of water, and the kidneys of dehydrated people will concentrate urine and even prevent urine production.
With the increase of urine concentration, its color will gradually deepen, and it will be dark yellow or even amber in severe cases.
3. Constipation
After ingesting food, the nutrients in the food are absorbed by the human body, and the remaining residues are slowly compressed and moved to the large intestine.
If there is insufficient water in the body, the stool will become hard and round when passing through the small intestine and large intestine.
And without lubricant, its moving speed will become very slow, which will lead to constipation.
Once the body is short of water, the intestine will absorb more water to replenish body fluids, which will lead to dry stool.
4. The skin lacks elasticity
Dehydration will reduce skin elasticity, and doctors often check skin elasticity quickly through "extrusion test" to judge whether patients are dehydrated.
Step 5 jump
In the heart, like other muscles in the body, the decrease of blood flow and electrolyte changes caused by dehydration can lead to palpitations.
6. No tears
No matter how loud you cry, there is not a tear, so your body is absolutely short of water.
7. Tired
Long-term water shortage will easily lead to the decrease of blood flow and blood pressure, and the oxygen content in blood will also decrease.
Without enough oxygen, muscle and nerve function will be weakened, and it is easier to feel tired.
8. Feel overheated
Water plays a key role in regulating body temperature.
Once you feel overheated, your body will sweat to lower your body temperature.
Once the body is dehydrated, it will stop sweating and overheat.
9. Muscle spasm
Long-term water shortage will cause electrolyte imbalance in the body, leading to continuous muscle spasm during or after exercise.
10. Dizziness
In addition to decreased blood flow and blood pressure, dehydration can also cause dizziness.
One of the key signals is sudden dizziness when you stand up quickly.
94% of human blood is made up of water.
Insufficient water will lower blood pressure, reduce the amount of blood entering the brain, and cause some symptoms of cerebral ischemia.
When the brain is short of water, people will feel dizzy like lack of oxygen.
1 1. Have bad emotions such as irritability, anxiety and depression.
Upset or anxiety, depression and other emotions are signals that the prefrontal lobe of the brain tells us that there is insufficient water in its active area.
When the body is short of water, because it can't produce enough urine, the body can only misappropriate some core substances as antioxidants to deal with toxic waste produced in the metabolic process.
They are used as antioxidants to neutralize hepatotoxic wastes.
If you feel upset or depressed for no reason, please drink two or three glasses of water slowly.
This will soon calm down and restore your usual mentality.
12. Body odor
Eliminating toxins from the body is one of the functions of the skin.
Skin is like a fine mesh sieve. When water evaporates through these meshes, the waste in the body will be discharged with the water.
Waste gives off an unpleasant smell, and insufficient water will increase its concentration and aggravate the body odor.
When the detoxification organs or excretory organs such as liver and kidney are overloaded, the skin needs to work harder to excrete toxins, and a rash will appear.
13. Can't sleep
Thirst often wakes people up from sleep, and lack of water can also make people feel hot and unable to sleep.
Because you can't get deep sleep, you will continue to dream or have nightmares when you sleep, and your body will feel dull pain.
Even when we sleep, our bodies continue to consume water.
If you sleep for 8 hours, you will lose a lot of water through breathing, and you will sweat when you sleep, which will aggravate dehydration in your body.
Therefore, you should replenish enough water during the day and drink 1/4 glasses of water before going to bed.
But if you drink too much water, you will often get up in the middle of the night to pee, so the amount of water you drink should not be thirsty.
14. Blink frequently
Frequent blinking indicates that insufficient tear secretion leads to dry eyes.
Usually, people with dry eyes blink frequently, and sometimes they close their eyes unconsciously, causing a tingling feeling in their eyes and then shed tears.
This is a protective mechanism implemented by the body to prevent water from evaporating from the eyeball.
If rubbing your eyes can't make them moist, drinking water can make the burning and pain of your eyes disappear quickly.
Using artificial tears or washing your face often and dropping water into your eyes can also help relieve symptoms.
15. blush
85% of the brain is made up of water. The brain is always immersed in saline cerebrospinal fluid, so it is extremely sensitive to the slightest water shortage.
When the dry body continues to dehydrate or the body temperature rises, the brain will give priority to ensuring the blood volume of the cerebral vessels, even at the expense of other tissues.
There are many nerve endings on the face. When the water supply is insufficient, the brain will expand the cerebral vessels in a certain proportion, so the face will turn red.
16. Joint strain
Joint is an important organ that absorbs the impact force between bones and plays a buffering role.
All joints are covered with cartilage, and the buffer layer in the joint capsule surrounds the cartilage and joints.
The synovial fluid in the joint capsule acts as lubricating oil and reduces the friction between cartilage.
When the body is dehydrated, the synovial fluid in the joint capsule will be reduced, and the impact force between joints cannot be absorbed normally.
As we all know, if there is no lubricating oil, the automobile engine can't work normally.
The same is true of joints. If the joint capsule contracts, the joint can't get enough water and blood, and the cartilage will become dry, fragile and easy to crack, which can't cushion the friction and impact.
If the joint is often painful, it means that the painful part is short of water and it is impossible to clean up the acidic or toxic substances accumulated in the joint.
17. Waist fat gain
Lack of water in the body can lead to constipation and reduce the body's hormonal ability.
Chronic constipation will cause abdominal circulation disorder, accumulate abdominal fat, and excessive abdominal fat will further lead to difficulty in excretion, thus forming a vicious circle of poor circulation and increased abdominal fat.
Insufficient hormone secretion caused by dryness in the body is easy to make people fat, especially the reduction of growth hormone and estrogen, which will increase waist fat.
Growth hormone deficiency will reduce muscle mass and increase abdominal fat, while the reduced muscle mass will reduce basal metabolism and make people fall into a vicious circle of obesity.
18. Headache and head weight
Brain cells will produce metabolic toxic waste during operation, but brain cells themselves can't stand these acidic substances, so they will clean up the waste in time.
This is also the reason why the brain has the priority to divide water.
When the water is insufficient, in order to clean up the waste, the brain will send instructions to send more blood to itself.
Bowing your head is such a signal.
If the increased cerebral blood flow can not meet the water demand of brain cells, migraine may even occur.
19. Memory loss
If the water in the blood is insufficient, resulting in water shortage in brain cells, the brain will not get the oxygen and nutrition it needs, and the function of brain cells will decline.
Brain cells can't get enough water, their recovery ability and information transmission ability decline, and their memory naturally declines.
What is more serious than this is that blood circulation disorder will lead to poor water supply and brain cells will be gradually damaged unconsciously.
Amnesia is also caused by this.
How much is appropriate to drink?
A person who performs normal physical activities in a general environment.
The water demand of human body is influenced by many factors, such as age, physical activity and environmental temperature, so it changes greatly. In general, it is recommended that adults living in mild climate and with light physical activity drink 1500ml ~ 1700ml (about 7-8 cups) of water every day.
A person who works or exercises in a high temperature environment.
People who work or exercise in a high temperature environment have a high level of physical activity and sweat a lot. According to the individual's physical load and heat stress, it is necessary to appropriately increase its daily water demand.
People with high activity level at general ambient temperature.
Under the general ambient temperature, athletes, farmers, soldiers, miners, construction workers, firefighters and other people with high level of physical activity have greater physical activity momentum in their daily work and will increase the loss of water through sweating. Pay attention to replenish excess water and consider light salt water at the same time.
The best way for human body to replenish water is to drink boiled water!
Cheap, safe and hygienic.
Risk of no energy (obesity)
Risks caused by excessive sugar (dental caries, diabetes, etc.). )
When will it be ready?
Drinking time should be allocated
You can drink water at any time of the day and never drink water when you feel thirsty.
After getting up in the morning, you can drink a glass of water on an empty stomach, which can reduce the blood viscosity and increase the circulating blood volume.
You can also drink a glass of water before going to bed, which is helpful to prevent the blood viscosity from increasing at night.