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Habit science

6 essays in this category. In reverse chronological order.

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  1. 01

    May 26, 2026

    7 min read

    Sudoku for better sleep

    Why playing Sudoku before bed, in the Tinta theme, is less aggressive than infinite scrolling. It is not insomnia treatment. It is a habit swap.

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  2. 02

    May 25, 2026

    8 min read

    Late-night light and the sleep you do not lose

    Does the light you turn on at three in the morning ruin your sleep? It has a gradient. What the literature says about melatonin, blue light and sleep hygiene, and why Lanterna BLA was made with exactly that window in mind.

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  3. 03

    May 23, 2026

    7 min read

    Sudoku as a contemplative practice

    Why playing Sudoku fifteen minutes a day works as a short antidote against digital distraction. Flow state, single-tasking and ataraxia in a nine-by-nine grid.

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  4. 04

    May 22, 2026

    7 min read

    Sudoku against cognitive decline

    What cognitive reserve is, how it builds up across a life, and why Sudoku enters (with no miracle promise) the menu for people who want to take care of the brain past 60.

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  5. 05

    May 18, 2026

    8 min read

    Sudoku, racquet sports and reading: three habits to live longer

    The three habits that show up in almost every serious longevity study. How combining logic, movement and reading became a non-medical prescription.

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  6. 06

    May 17, 2026

    8 min read

    Does sudoku improve reasoning? What research actually says

    An honest review of the scientific literature on sudoku, cognitive training and brain function. No hype, no miracle promises.

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