Can a person's height change during the day?

If you measure yourself when you get up in the morning and take it again before you go to bed at night, the result will surprise you. The length of a person can change in a day, and it is getting shorter and shorter! It is often shorter at night than in the morning 1-2 cm. If you walk long distances or do heavy work during the day, it will even be shortened by 4-6 cm. What's going on here? Let's look at the structure of human bones. The human skeleton is not successfully cast like a machine skeleton, otherwise, you can't nod, turn your neck, dance, sit casually and throw freely. You see, the skull is supported by the spine, and the spine itself is a section. If you go down, the pelvis bears the upper bone and presses on the thigh bone, and the thigh bone bears the calf bone, which is layered like a pagoda. To build a pagoda, you must stick bricks together with lime. People's bones can't be stacked like this. There must be some connection. Have you ever eaten pig bones? When you chew a bone, if the bone is composed of two parts, you can find a milky thick film called chondroitin at the junction of the two parts, which is very tough to chew, a bit like a soaked jellyfish. It is this thing that connects the bones. All higher vertebrates have this cartilage layer, and people are no exception. When we fall asleep, our bones are no longer layered and joints are loose, so the cartilage layer connecting bones will absorb more body fluids and become thicker and longer. When we get up in the morning, it will still maintain a loose elastic state and push our bodies up, so our bodies will be very high in the morning. During the day, we either sit or stand or walk. Gravity pulls us down from head to toe, so the weight of our head is on our neck, and the weight of our head and neck is on our spine. The weight of all kinds of bones is pressed down in turn, and the cartilage layer between joints is compressed by gravity and has to shrink. In this way, the body that was originally lifted by it was shortened.