Napping is more effective than caffeine

The New York Times reports of a study of 61 people, where those who took a 2-hour afternoon nap did better at repeating verbal, perception, and motor-skill tests than those given caffeine or a placebo.

Those who had caffeine had worse motor skills than those who napped or had a placebo. In the perceptual task, the nappers did significantly better than either the caffeine or placebo group. On the verbal test, nappers were best by a wide margin, and the caffeine consumers did no better than those given a placebo. Despite their mediocre performance, caffeine takers consistently reported less sleepiness than the others.

“People think they’re smarter on caffeine,” said Sara C. Mednick, an assistant professor of psychiatry at the University of California, San Diego, and the lead author of the study, which appeared in the Nov. 3 issue of Behavioral Brain Research. “But this study is a strong argument for taking a nap instead of having a cup of coffee.”


The full study paper is available here:

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