A new study conducted at UC Irvine with the U.S. Army researchers found that not having access to work email significantly reduces stress and allows emplyees to focus far better. Subjects in this study were outfitted with heart rate monitors. Those that had access to email, switched screens twice as often and were in a steady "high alert" statewith a more constant heart rate. Those removed from email for 5 days had a more natural, variable heart rate. Those on high alert had, not surprisingly, higher cortisol levels, a hormone linked to stress, as well as abdominal fat.
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