Children Exercise Less as They Get Older
American children become less active as they age, according to a report in The Journal of the American Medical Association.
Nine-year-old children usually exercise a couple of hours each day. However, when a child reaches adolescence, he or she becomes more sedentary.
Inactivity can cause many health problems later in life, such as heart disease and obesity.
to age: to get older.
adolescence: (usually) a person’s teenage years.
sedentary: inactive, sitting down a lot.
obesity: the state of being very fat.