Health can be defined as a state of physical, mental, and social well-being in which an individual is free from illness or injury. It encompasses not only the absence of disease or infirmity but also a sense of vitality and positive well-being. A healthy person has the ability to adapt to various physical, emotional, and environmental stressors, and is able to maintain a balanced and fulfilling life. Health is influenced by a wide range of factors including genetics, lifestyle choices, access to healthcare, and social determinants such as income, education, and environment.