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

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

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

Secondly

, their physical condition limits their movement.

For example

, some of them may have physical problems

such

as heart disease and leg problems.

Thirdly

, 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

, which was the mysterious prehistoric towers, but the

lecture

Replace the word

lecturer

show examples

disagrees and she attacks each

claims

Change to a singular noun

claim

show examples

made in the reading passage.

First,

in contrast

to the hypothesis that the

brochs

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

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

to

Change preposition

on to

show examples

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

due to

their inability to keep them in distance.

Second,

on

Change preposition

apply

show examples

the

Correct article usage

apply

show examples

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

, as opposed to the claim in the reading that they

embodies

Change the verb form

embody

show examples

the social function, which

are

Change the verb form

is

show examples

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

also

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

brochs

.

However

, these

broches

Correct your spelling

brochures

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

with

Change preposition

apply

show examples

the

Correct article usage

apply

show examples

reality.