A Cup of Coffee Might Not Help You Stay Awake

by Julia Samuel on  June 14, 2016 at 1:16 PM Lifestyle News
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Caffeine fails to improve alertness or performance after three nights of restrictive sleep to five hours per night.
A Cup of Coffee Might Not Help You Stay Awake
A Cup of Coffee Might Not Help You Stay Awake
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The study carried out by American Academy of Sleep Medicine show that relative to placebo, caffeine significantly improved Psychomotor Vigilance Task (PVT) performance during the first two days, but not the last three days of sleep restriction.

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Lead author Tracy Jill Doty of Walter Reed Army Institute of Research explained, "These results are important, because caffeine is a stimulant widely used to counteract performance decline following periods of restricted sleep. The data from this study suggests that the same effective daily dose of caffeine is not sufficient to prevent performance decline over multiple days of restricted sleep."

Source: ANI
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