Spreadsheets don't end. But your concentration does — unless you take breaks.
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Data analysis requires sustained concentration. You're switching between spreadsheets, dashboards, databases, and documentation. Hours disappear while you chase an insight through the numbers.
That focus is valuable — but it comes at a cost to your eyes, posture, and eventually your analytical clarity.
Pattern recognition and analytical thinking decline significantly after 2-3 hours without breaks. The insight you're chasing might be obvious after you step away.
Experienced analysts know: