Getting in shape

People usually decide to get in shape when they do not like their look or whenthey do not feel well. They my be round where they should be straight or soft where they should befirm, or they may easily run out of breath when climbing a flight of stairs._____26_____ The body stores fat when the amount of food eaten is greater thanthe amount needed to give the body enough energy for its activities._____27_____

_____28_____ People who usually only use their muscles to sit, stand, and walkshort distances usually have very soft muscles. These people do not look badlyout of shape, but they still do not look healthy. When people exercise little, their hearts do not have to work hard and soonbecome weak. _____29_____ So they must beat quickly in order to get enoughblood to the different parts of the body.

When people with this kind of heartdo something difficult, their hearts must beat very fast to give their musclesenough blood. _____30_____ When people exercise regularly, they burn more energy, leaving less to bestored as fat, challenge their muscles, making them stronger and harder, andforce their hearts to pump harder in order to supply enough blood in fewerbeats. The combination of low body fat, firm muscles and a strong heart makespeople look better, look fitter and feel better.

A. People who eat a lot and move very little usually get quite fat.

B. Then these people begin to breathe heavily and soon become very tired.

C. Muscle becomes soft when it is not used to doing difficult work.

D. They will die for going too long.

E. The roundness is caused by fat, which lies over the muscles and under theskin.

F. They do not pump very much blood when they beat