Skeleton is the basis of a person's body size, and it has nothing to do with being fat or thin. The definition of fatness is whether the proportion of weight and height is coordinated. On the one hand, obesity is related to its own genetic inheritance, and it will be different with acquired nutrition and exercise. Fat people get fat when they drink water, but thin people can't get fat. Ordinary people can adjust through diet and exercise, and symmetry and proportional coordination are beautiful.

Skeletonization is the basis of the complexity of biological structure, and skeletal system is the limiting factor of the evolution of biological morphology. Skeleton is a hard organ that constitutes the endoskeleton of vertebrates. Its function is to exercise, support and protect the body. Making red blood cells and white blood cells; Store minerals. Skeleton is composed of various shapes and has complex internal and external structures, which makes the skeleton remain hard while losing weight.

Extended data:

The function of human bone:

1. protection function: bones can protect internal organs, such as the skull to protect the brain; Ribs protect the chest.

2. Support function: bones form bones and maintain body posture.

3. Hematopoietic function: Bone marrow produces blood cells through hematopoiesis in the bone marrow cavity space between long bone and sponge bone.

4. Storage function: bones store important minerals of the body, such as calcium and phosphorus.

5. Exercise function: bones, skeletal muscles, tendons, ligaments and joints jointly produce and transmit strength to make the body exercise.

6. Most bones can perform all the above functions to some extent, but some bones are only responsible for a few of them.