Health experts recommend that adults engage in at least minutes of moderate physical activity on most, preferably all, days of the week and that children exercise for minutes daily.

Kids and youths ought to complete an hour or a greater amount of physical movement every day. The vast majority of the hour ought to be either direct or vivacious intensity aerobic physical action, and ought to incorporate vigorous-intensity physical activity no less than 3 days a week.

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .