The Science of Deep Work: Why 90-Minute Focus Blocks Beat 8-Hour Days

The Science of Deep Work: Why 90-Minute Focus Blocks Beat 8-Hour Days

The 8-hour workday is a 19th-century artifact. It was built for factory work, not knowledge work — and the data is increasingly clear that for thinking jobs, it’s actively counterproductive. The new frontier of high performance isn’t longer days. It’s 90-minute focus blocks, repeated two or three times a day, with real recovery in between. […]

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