Active mind
Brain training without screens: 6 everyday exercises for an active mind
Simple ways to exercise reasoning, attention and memory without a game or a feed: estimation, explaining, spotting errors, mental walks and more.
Blog
Learn to train your mind
Sleep, focus, calm and thinking for yourself, explained simply and with sources.
Meditation
A 10-minute daily routine for a calmer, more focused mind
A simple daily routine in four parts: a 30-second check-in, a few minutes of calm, one short mental exercise, and a one-line reflection.
Active mind
Fermi estimation: a 5-minute mental workout anyone can do
How to estimate big unknown numbers by reasoning in steps, with a worked example, common mistakes, and how to practice daily without a calculator.
Focus
How to focus better: 7 small habits for deep attention in a distracted world
Practical, screen-light habits to protect your attention: one-tab work, focus blocks, a 60-second reset and how to train attention like a muscle.
Sleep
How to sleep better: a simple wind-down routine you can start tonight
A calm, practical evening routine to help you rest better: light, screens, a short breathing practice and a way to set down tomorrow's worries.
Active mind
How to spot logical fallacies: 8 common ones, with everyday examples
A plain-English guide to the reasoning errors you meet every day, from ad hominem to false dilemmas, and a simple habit for catching them.
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