Generally speaking, 18-25 years old is almost the healthiest, most beautiful, strongest and highest metabolic rate stage in life.

After the age of 25, not only the skin quality began to decline, but also the basal metabolism began to decline.

With the growth of age, people's muscles will continue to lose and the proportion of body fat will gradually increase; After the age of 35, the bone density will gradually decrease.

After the age of 40, this process will become more obvious. Not only subcutaneous fat increases, but also visceral fat and even bone marrow fat will increase.