How does Chapter 8 describe the transient and impermanent nature of the human body?

In Chapter 8, the text uses powerful imagery to convey the impermanence of the physical body and the passage of time. It draws an analogy to the flame of a lamp, which appears to be the same from beginning to end but is actually different every single moment. The chapter states that the body which exists in one moment is not the same in the next, and what is seen one moment perishes the next. It takes a stark view, describing the body as a "washroom of excrement and urine, a foul place of phlegm, pus, and saliva," where death is placed at every moment, emphasizing this as a great misfortune.