May 12, 2003
Source: Scientific American http://www.scientificamerican.com/article.cfm?id=what-causes-insomnia
Insomniacs can be helped by practicing good “sleep hygiene,” which includes paying attention to the effects on sleep of environmental factors such as noise, light, and temperature; avoiding behaviors that can lead to conditioned insomnia such as reading or watching TV in bed; avoiding alcohol, nicotine, caffeine, or certain medications before bedtime; and paying attention to the timing of exercise, snacks, and bedtime itself.
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