Most of the time,people become overweight because their bodies get more calories (¿¨Â·Àï) from food and drinks than they burn through physical activities,such as playing soccer or walking to school. Extra calories are   1   as fat. The more extra calories a person   2  ,the more fat is stored. This happens very easily in   3  life because people spend more time in front of TV sets or computers and less time exercising. They   4   everywhere instead of walking or riding bikes. Fewer schools   5   gym classes;more kids play video games instead of taking active activities.