The word health refers to a state of complete emotional and physical well-being. Healthcare exists to help people maintain this optimal state of health. Good health is central to handling stress and living a longer, more active life. In this article, we explain the meaning of good health, the types of health a person needs to consider, and how to preserve good health. Health care systems are organizations established to meet the health needs of targeted populations. According to the World Health Organization (WHO), a well-functioning health care system requires a financing mechanism a well-trained and adequately paid workforce, reliable information on which to base decisions and policies and well maintained health facilities to deliver quality medicines and technologies.