Health is the level of functional or metabolic efficiency of a
living organism. In humans, it is the general condition
of a person's mind and body, usually meaning to be free from illness, injury or pain. The word health means different things to different
people, depending on the situation.
As defined by World Health Organization (WHO), it is a "State
of complete physical, mental, and social well being, and not merely the absence
of disease or infirmity." Health is a dynamic condition resulting from a body's
constant adjustment and adaptation in response to stresses and changes in the environment for maintaining an inner equilibrium called homeostasis.
