Why do you feel dizzy when you stand up after squatting

Caused by insufficient blood supply to the brain It is recommended to slow down the movement as much as possible every time you want to get up Squatting for a few minutes and then standing up to feel dizzy and dizzy, most people will have it, as long as it can return to normal after a while, it is a normal physiological reaction, not a disease. If it takes a long time to return to normal, you should pay attention to it, such as anemia, hypoglycemia, cardiovascular disease, etc. Slender boys who are considered to have a "pneumothorax constitution" are mostly malnourished and have weakened immunity.

It is most likely to produce the symptoms of feeling dizzy and dizzy after squatting for a few minutes and then standing up. Is it normal to get dizzy when standing up after a long squat? When a person is in a squatting position, the lower limbs are in a flexion state, and the blood vessels of the lower limbs are compressed, so that the blood is not easy to flow to the lower limbs, and the lower limbs appear to be ischemia.

On the other hand, when a person who has been squatting for a long time suddenly stands up, the blood vessels of the lower limbs are restored to be unblocked, and then it is like suddenly opening the floodgates, and the blood will rush to the lower limbs in large quantities, so that the blood in the head is not enough, because the brain does not get enough oxygen and nutrition for a while, most people will have dizziness and heartbeat, but after the body adapts to it, this phenomenon will disappear quickly. Most of this phenomenon is a physiological phenomenon and is not caused by anemia. People with this phenomenon should not squat for a long time, if they have to squat often because of work, they can prepare a low stool or a small chair that can be folded in advance, and sit to reduce the flexion of the lower limbs; When standing up after squatting for a long time, it is advisable to stand up slowly to reduce the discomfort caused by this; People with this phenomenon should usually participate in more physical exercise to enhance cardiovascular function. Wish.

On the one hand, it has to do with physical health; On the one hand, it is natural, when people are squatting, the brain needs the blood supply capacity of the heart is low, so during this time, the heart has been supplying blood at a lower pressure, and when you stand up suddenly, due to the increase in the physical position of the brain, you need a higher pressure blood supply, but the heart can not adapt to this situation in a short period of time, so there is a blood supply tension, and you will be dizzy!

The blood supply to the brain is insufficient when squatting, so it is easy to feel dizzy when standing up suddenly, and people with anemia are especially obvious.

The main reason for this phenomenon is temporary anemia in the brain.

When a person is squatting, the waist and legs are twisted and turned, and the blood cannot flow up and down. If you stand up suddenly at this time, the blood will flow down quickly, resulting in local ischemia in the upper body, but the brain and eyes have particularly strict requirements for oxygen and nutrients, and they must not be slackened. If you are already weak, the situation is more serious.

However, don't panic when this happens, and you don't have to go to the hospital. If the blood supply to the head is insufficient, the heart will immediately work hard to pump blood up, and it will not take long for the body to return to normal. Of course, when standing up, don't move too hard, try as slowly as possible, so that the blood does not flow too violently, and the blood supply to the heart can keep up, and this phenomenon will not occur.

1.At the beginning, the blood in the lower limbs was not smooth, and suddenly it was opened, and most of the blood flowed to the lower limbs;

2.The center of gravity begins to be low, rises sharply, inertia, and the blood does not reach the brain;

3.Poor cardiac accommodation.

In this way, the brain is deprived of blood and oxygen, and energy is deprived.

When a person is in a squatting position for a long time, the muscles need a lot of blood and oxygen to maintain the position due to the strain on the leg muscles. Therefore, in contrast, most of the blood in the body reaches the lower half of the body.

When a person suddenly stands up, the position of the head rises rapidly, and the relative distance between the brain and the heart increases, and the blood needs to rise rapidly to ensure the normal blood of the brain**. However, because most of the blood is concentrated in the lower half of the human body, it does not have time to return to the heart for a while, so the heart cannot discharge enough blood to maintain blood pressure, which causes a very transient cerebral ischemia. If the blood in the brain is insufficient, symptoms such as dizziness and dizziness will occur.

This phenomenon is medically called orthostatic hypotension.

Orthostatic hypotension is common in normal people, but it is generally not necessary because it lasts only a few seconds at most. Physical exercise can significantly enhance the ability of blood vessels to constrict and dilate, keep blood pressure stable, and is the most effective way to overcome orthostatic hypotension.

When a person is in a squatting position, the lower limbs are flexed, and the blood vessels of the lower limbs are compressed so that the blood is not easy to flow to the lower limbs, and the lower limbs appear to be ischemia. When a person who has been squatting for a long time suddenly stands up, the blood vessels of the lower limbs are restored to unblocked, and at this time, it is like suddenly opening the floodgates, and the blood will rush to the lower limbs in large quantities, so that the head will not have enough blood, and the brain will not get enough oxygen and nutrition for a while. The conclusion is:

Most of this phenomenon is a normal phenomenon and is not caused by anemia. 1. People with this phenomenon should not squat for a long time, if they have to squat often due to work, they can prepare a low stool in advance to reduce the degree of flexion of the lower limbs; 2. When standing up after squatting for a long time, it is advisable to stand up slowly to reduce the discomfort caused by this; Care should even be taken to clean up the work site to prevent injuries after a brief loss of consciousness and a fall to the ground. 3. It is advisable to participate in more physical exercise to enhance cardiovascular function.

Why do people get dizzy when they stand up after squatting for a long time? If you squat on the ground for a little longer, and when you stand up suddenly, you often feel the world spinning and your eyes are full of stars. This is caused by temporary anemia of the head.

When a person is squatting, there are some special cases for the distribution of blood in the body. The first is that the two legs are pressed very tightly, the blood vessels are flattened, and the blood reaching the lower limbs is relatively small; Secondly, because the head is slightly tilted forward when squatting, the blood to the head is relatively more distributed. When you stand up suddenly, the blood vessels in the lower limbs suddenly release the compression, so a significant part of the blood flows to the lower half of the body.

In addition, blood also has a certain weight in the body, and when you stand up suddenly, the blood flow will also flow to the lower half of the body due to the attraction of gravity and inertia, and the blood distributed to the upper body will be reduced. In addition, when standing up, the head is also upright, and it is more difficult to spurt blood from the heart to the high head. All of this results in a relative decrease in blood flow to the head.

The human brain is the most in need of blood oxygen, and a temporary reduction in blood supply can make people feel dizzy due to temporary cerebral anemia. In addition, due to the decrease in blood in the head, the blood supply to the eyeballs is naturally less, so the phenomenon of dazzling and Venus will occur. At the same time, anemia and hypoglycemia can aggravate this phenomenon.

Everybody does.

Squatting posture will squeeze the blood to the upper limbs, and standing suddenly will make the blood of the body flow quickly to the lower limbs, the process is rapid, and the brain will have a state of instant ischemia, so there will be dizziness and dizziness. But soon the human body will find its own balance and return to its normal state. It's best to straighten one leg slowly and then switch to the other leg to give the blood a buffer period so that there will be no symptoms as you said.

No problem. After squatting for a long time, the blood supply to the head is a little insufficient after standing up suddenly, this is a normal phenomenon, there is nothing to worry about, and the dizziness and dizziness will be fine immediately. If the phenomenon is more serious, you should go to the hospital.