Half of the human body refers to one side or a portion of the body, typically divided along the midline. It includes half of the skeletal system, muscular system, nervous system, and other structures such as the circulatory system and organs. In medical or anatomical contexts, studying half of the body can be useful for understanding asymmetry, like in cases of injury, stroke, or certain conditions that affect one side of the body more than the other. For example, a stroke can lead to weakness or paralysis on one side of the body. Additionally, this concept may be used in comparative anatomy or in educational settings to simplify learning about body structures.