Our bodies are complex systems of organs, bones, and muscles. The heart is crucial: it's the body's engine. It pumps continuously to supply blood and oxygen to all organs. The heart is sensitive, so it's vital to maintain it. According to the World Health Organization (WHO), heart disease is a major cause of death worldwide, with an estimated 17.9 million fatalities annually. Heart disease includes conditions that affect heart function. Heart attack, a common type of heart disease, occurs when blood flow to the heart is blocked.