1 As anyone who has begun an exercise program knows,

the relationships between exercise, appetite, weight control and

hunger are complex and often counterintuitive. The arithmetic

4 involved seems straightforward. You burn calories during

exercise and, over time, should drop kilos. Yet the reality is

more annoying. In both scientific studies and the world

7 inhabited by the rest of us, most people who start exercising

lose fewer pounds than would be expected.

The problem with exercise as a weight-loss strategy

10 seems to be in large part that it can make you hungry, and many

of us wind up consuming more calories after a workout than we

torched during it.

13 In any case, doctors point out that we should exercise,

whether or not the activity makes us thin. There are many other

reasons, irrespective of the effects on appetite, why exercise

16 benefits health.

Internet: <www.nytimes.com> (adapted).

Based on the text above, judge the following items.