Word Pairs


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Many people cannot sleep without [usage / using] a fan, but scientists say this could be bad for us. This is unwelcome news for those of [them / us] struggling to nod off during the current [scorching / scorcher] hot weather. According to sleep experts at the website Sleep Advisor, there are many [reasons / reason] why the use of a fan could be [detriment / detrimental] to our health. Fans can [cause / because] problems for people with asthma or hay fever. The rotating blades of fans cause [dusty / dust] and pollen to circulate around the room and [add / addition] to an asthmatic's sleeplessness. Sleep Advisor says circulating air can dry out and [irrigate / irritate] your eyes, mouth and sinuses, which also makes it difficult to sleep. Fans also cool the air and can make muscles tense up and [clamp / cramp] .

Other sleep experts disagree and say there [are / aren't] no dangers to health from using a fan. Dr Len Horovitz, a [specialize / specialist] on the health of the [respiratory / respire] system, said: "There's nothing about a fan that's toxic. There's nothing wrong with [circulating / circulate] air." He told the Live Science website that if a fan stops us sweating, it will help [us / them] to sleep. He said people should keep fans at a [safely / safe] distance from their bed and not have them blowing [direct / directly] at their body. He also recommended keeping an air [filler / filter] in the bedroom to reduce the levels of dust in the room. Sleeping with a fan may be [prefer / preferable] to using an air conditioner, which can chill any sweat on our body and [possibly / possible] cause us to wake up with a cold.

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