The term "upper body" refers to the part of the human anatomy that includes all the muscles, bones and organs located above the waist. This generally means from the neck down to the hands, although some people may also include the shoulders in this definition as well. The upper body is responsible for many important functions such as breathing, eating, speaking, and performing physical activities like lifting or carrying objects. It includes organs such as the heart, lungs, liver, kidneys, and brain, as well as muscles that help in moving the arms and hands.