(SILVER SPRING, Md.) -- New research suggests that people who have outgoing personalities suffer worse effects due to lack of sleep than introverts, reports BBC.
Researchers at the Walter Reed Army Institute in Maryland kept 48 volunteers awake for 36 hours and only allowed some to mix with others.
Those who were defined as introverts did a better job staying awake then extroverts who were given human contact.
Extroverts who were denied human contact, however, also did well in reaction tests, which suggests that it is social stimulation that tires out the brain.
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