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

Other sleep experts and say there are no dangers to health from using a fan. Dr Len Horovitz, a specialist on the health of the respiratory system, said: "There's nothing about a fan that's toxic. There's nothing wrong with circulating air." He the Live Science website that if a fan us sweating, it will us to sleep. He said people should fans at a safe distance from their bed and not them blowing directly at their body. He also recommended keeping an air filter in the bedroom to the levels of dust in the room. Sleeping with a fan may preferable to using an air conditioner, which can any sweat on our body and possibly us to wake up with a cold.

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