If you don't sleep with a pillow, you will find that your head leans back slightly when you lie flat, and then your head position is lower, even lower than your heart position. In this way, the blood in the head can not flow back to the heart smoothly, completing the blood circulation in the head, resulting in excessive blood in the brain. I often get dizzy after getting up the next day and can't get up. In the long run, it is not good for your health.
/iknow-pic.cdn.bcebos.com/9345d688d43f87949f4f4d1de1b0ef41bd53a31"target =" _ blank "title =" ". /iknow-pic . cdn . BCE Bos . com/9345d 688d 43 f 87949 Fe 4 f 4d 1de 1 b0ef 4 1bd 53 a 3 1？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 600% 2Ch _ 800% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto " esrc = "/ 9345d 688d 43 f 87949 Fe 4 f 4d 1 b0ef 4 1 BD 53 a 3 1 "/>
It is not conducive to ensuring the quality of sleep. Because the human spine is normal and has four bends, only by maintaining the normal curve of the spine can the normal physiological function of the cervical spine be guaranteed.
First of all, the sleeping environment is a system, and it is not comprehensive to take out any single component in the system. Among them, the cooperation between mattress and pillow is particularly important, accounting for more than 70% of the whole sleeping environment.
/iknow-pic.cdn.bcebos.com/43a7d933c895d143e68445dc7ff082025a "target =" _ blank "title =" "class =" ikqb _ img _ alink ">. /iknow-pic . cdn . BCE Bos . com/43 a7d 933 c 895d 143 e 68445 DC 7 ff 082025 BAF 075 a？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 600% 2Ch _ 800% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto " esrc = "/ 43 a7d 933 c 895d 143 e 68445 DC 7 ff 082025 BAF 075 a "/>
Now I'm sleeping. When sleeping, the pillow should hold the head so that the center of the head (almost the position of the ear) is slightly higher than the center of the shoulder. The model in the picture is asleep, and it is more reasonable to lower the red line to the green line. The purpose of this is to keep the head and cervical vertebrae as natural as possible. The reason why it is raised a little is to prevent blood from flowing back to the head due to gravity, causing dizziness and other symptoms.
/iknow-pic . cdn . BCE Bos . com/562 c 1 1 DFA 9 EC 8 a 13 e9 c 7 f 6 1 FFB 039 18fa 1 ECC 074 " target = " _ blank " title = " " class = " ikqb _ img _ alink " >/iknow-pic . cdn . BCE Bos . com/562 c 1 1 DFA 9 EC 8 a / kloc-0/3 e 9 c 7 f 6 1 FFB 039 18fa 1 ECC 074？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 600% 2Ch _ 800% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto " esrc = "/ 562 c 1 1 DFA 9 EC 8 a 13 e9 c 7 f 6 1 FFB 039 18fa 65438
Pillow usually refers to an object that is placed under the head when people sleep and has a certain degree of softness. Modern medical research believes that the human spine is a straight line from the front, but a curve with four physiological bends from the side. In order to protect the normal physiological curvature of the neck and maintain normal physiological activities, people must use pillows when sleeping. A pillow generally consists of a pillow core and a pillowcase.