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health, in humans, the extent of an individualā€™s continuing physical, emotional, mental, and social ability to cope with his or her environment. This definition is just one of many that are possible. What constitutes ā€œgoodā€ health in particular can vary widely. The rather fragile individual who stays ā€œwellā€ within the ordinary environment of his or her existence may succumb to a heart attack from heavy shovelling after a snowstorm; or a sea-level dweller may move...

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