Light work for smokers

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The Independent Online
Smokers are more mentally alert at night than their non-smoking opposites thanks to the effects of nicotine, scientists said yesterday.

Researchers at Surrey University made the findings after depriving a group of 30 smokers and non-smokers of sleep for 10 hours while asking them to perform a series of alertness tests. There was a caffeine ban but smokers were allowed to light up.