The Health app keeps you motivated by showing you how much you move. It combines activity data from iPhone — like your steps and distance traveled — with metrics from third-party fitness apps. And Apple Watch automatically records simple but meaningful kinds of movement, like how often you stand, how much you exercise, and your all-day calorie burn.
Health, as defined by the World Health Organization (WHO), is "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity." This definition has been subject to controversy, as it may have limited value for implementation. Health may be defined as the ability to adapt and manage physical, mental and social challenges throughout life.