The heart is a vital organ in the human body, responsible for pumping blood throughout the circulatory system. It is located in the chest, slightly to the left, and consists of four chambers: two atria and two ventricles. The heart's rhythmic contractions ensure that oxygen-rich blood reaches all body tissues while removing carbon dioxide and other waste products. The heart operates through a complex electrical system that regulates its beats. It is essential for maintaining overall health, as it supplies nutrients and oxygen to organs and tissues. A healthy lifestyle, including regular exercise and a balanced diet, can help support heart function and prevent diseases such as heart disease.