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Does it take you a long time to fall asleep? Feel sleepy and fatigued during the day? You may have a high workload, according to a recent article published in the scientific journal SLEEP. Researchers at the University of Pennsylvania studied 63 adults in a well-controlled ten-day laboratory study.

Half of all participants performed computer tasks under a high workload (multiple two-hour work sessions) while the other half had a moderate workload (multiple one-hour sessions). Also, some participants were only allowed 4 hours in bed for sleep each night, for five nights in a row, while others received 8 hours in bed each night.

Participants performing under high workload felt sleepier and more fatigued than did those with moderate workload, and this was true both for those receiving 8 hours in bed each night as well as those allotted a mere 5 hours. That is, regardless of how much sleep participants had gotten, high workload made them feel sleepier and more fatigued.

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