S e c o n d e d I t I o n 1 Reading for the Real World 1

Why Play Computer Games?
Discussion
Discuss the following questions.
1.
What are the advantages of playing video games?
2.
What are some problems that playing video games can cause?
Track 8
 

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Vocabulary Preview
 
Match each word or phrase with the correct definition.
1.
density 
a.
a way; a procedure
2.
inaccurate 
b.
mass divided by volume
3.
mass 
c.
having well-developed muscles
4.
method 
d.
not exact; not correct
5.
muscular 
e.
exact; accurate
6.
precise 
f. 
a measure similar to weight
Pre-Reading Questions
Think about the following questions.
1.
What are some health problems caused by too much body fat?
2. 
How can you tell if someone is unhealthily fat?
3. 
What do you think BMI is?
Body Mass 
and Weight
 
H e a l t h & M e d i c i n e
1
U N
I
T
3

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30
Body Mass and Weight
5
10
15
20
25
T 
o be 
obese
means to have too much fat on the body. Obese people are 
not just overweight. Such people are likely to suffer health problems 
because of their weight. The precise cause of obesity is not clear. 
However, it is clear that obesity is a problem in most countries. One study 
estimated that about 55 percent of people in the United States are obese. People 
need to understand what obesity is and how to tell if they themselves are obese 
so that they can change their condition. 
An obese person does not have to look