The term "midline" refers to an imaginary line that divides the body into equal left and right halves. It is an important concept in anatomy and is used to describe the position of various structures in relation to this central line. For example, organs like the heart and lungs are located on either side of the midline. In addition to anatomy, the midline is also relevant in fields like physical therapy and sports science. It helps professionals assess body alignment and movement patterns, ensuring that exercises and treatments promote balance and proper posture. Understanding the midline can enhance overall physical performance and health.