▶ Your Answer :
The reading passage contends that there are
three theories which explain why people sleep. However, the lecturer brings up
several points that contradict this argument.
First of all, the lecturer insists that the
positive impact of REM sleep for people’s memory function has not been proven
although sleeping improves people’s memory function. This is because
experiments show that people who got no or rarely REM sleep still had good
memories. This rebuffs the reading passage’s assertion that getting REM sleep enriches
people’s cognitive abilities.
Second, the speaker admits that getting
sleep contribute for ill or injured people to restore their bodies. However,
the speaker points out that people cannot eat foods when they sleep. Therefore,
people cannot build up energies in their body. Practically, people eat immediately
when they get up in the morning since they lost their energy during last night.
As a result, it is only true that people’s useless energy go away when they
sleep. This casts doubt on the reading passage’s explanation that people can rejuvenate
by sleeping since they save their energy while they sleep.
Last, the speaker indicates that everyone
does not have same amount of poison. This is due to the fact that people’s
bodies absorb different amount of toxin. Furthermore, in the experiment, subjects
were deprived sleep during several days and then they slept in longer period
than normal. Afterward, those people’s noxious matters levels are lower rather
than normal. Hence, the result of experiment is inconclusive. In the end, more clear
researches are necessary. This counters the reading passage’s claim that people
remove toxins from their bodies when they sleep.
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