Psychologists believe that we can keep our cognitive control system from losing vigilance and help retain long-term focus by simply taking breaks. The formula recommended by experts is twofold. First, take a brief mental break every twenty minutes: just a momentary deactivation from your singular focus. The key is to pick an activity completely different from what you were doing. If you’ve been reading a report, don’t switch to reading emails, switch to something that uses a different set of skills, like talking to someone face-to-face. Second, relax for ten minutes for every ninety minutes
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