Insomniacs don't just suffer at night. During the day, they
often feel sleepy, have trouble concentrating and report greater
difficulty with work or school performance than individuals who
get adequate sleep.  A model sleeps backstage before the
presentation of the Burberry Prorsum Spring/Summer 2014
collection during London Fashion Week Wednesday. Reuters  But
researchers are intrigued by an apparent discrepancy: Despite
what insomnia patients experience subjectively, they often seem
able to perform cognitive tasks as well as people getting
adequate sleep.  One possibility is that insomnia doesn't lead
to inferior performance after all—maybe it just feels that way.
Insomnia Risk Factors    • Being a woman   • Being older than 60
• Having depression, anxiety or other mental-health disorder   •
Having long-term stress   • Changing job shifts   • Experiencing
jet lag  Source: The Mayo Clinic  Using brain imaging
technology, researchers monitored 25 people with insomnia and 25
normal sleepers as they performe