Some doctors show it is important for the old people to have regular exercise. However, some old people cannot get enough exercise. Why do you think this happens? How can old people be encouraged to exercise regularly?

It is true that some elderly citizens are not available to do sports, though it is beneficial for their health both physically and mentally. There are many reasons behind

this

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trend, and governments and societies should make much more effort to help them. On the one hand, there are many reasons why the elderly do not get enough outdoor activities.

Firstly

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, the elder residents do not realize the significance of working out and think doing sports is just for young people.

Secondly

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, their physical condition limits their movement.

For example

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, some of them may have physical problems

such

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as heart disease and leg problems.

Thirdly

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, the infrastructure is not publicized and the space is limited. What's more, elderly citizens' time is occupied by their children, even their grandchildren. They do not harbour much time to exercise. The reading passage lists several competing theories to explain the usage of

brochs

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, which was the mysterious prehistoric towers, but the

lecture

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lecturer

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disagrees and she attacks each

claims

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claim

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made in the reading passage.

First,

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in contrast

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to the hypothesis that the

brochs

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were built for defensive purposes, which can be used to deter the offenders by means of their tall walls, the speaker points out that the absence of external walls undermines the defensive purpose of these

brochs

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and makes it impossible to shoot through the windows. She goes

to

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on to

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say that the determining offenders would throw fire or break the door by force to attack them

due to

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their inability to keep them in distance.

Second,

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on

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apply

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the

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apply

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contrary to the second proposal that the ancients constructed them to store extra food for the future, the lecturer contends that there are water tanks and fireplaces, which contradicts the principles of building warehouses and he continues that the former would produce moisture to spoil these grains stored there and the latter would cause fires since dust there are easy to catch fire.

Lastly

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, as opposed to the claim in the reading that they

embodies

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embody

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the social function, which

are

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is

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treated as a symbol of the power of leaders with elaborated decoration and pottery containers holding expensive liquid, which is

also

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challenged by the professor, and she asserts that it is inconsistent with the fact that there would be many small houses surrounding the

brochs

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.

However

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, these

broches

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brochures

are situated separately without the appearance of these small houses and they are close to each other themselves, which contradicts

with

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apply

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the

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reality.