Kurt Greiner
Poor Focus at 45: Three Causes, One Is Fixable
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If you are over 40 and your focus has declined, the first question nobody asks is: *what kind of focus problem is this?* Read more…
HRV Tracking: Useful for Athletes, Harmful for Most
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Wearable HRV tracking has created a generation of people who feel bad about a number they do not understand. A low HRV reading in the morning triggers a casc… Read more…
How to Prevent Sarcopenia in Your 40s
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The muscle loss that determines your quality of life at 80 is not the dramatic wasting of old age that we associate with nursing homes and walkers. It is the… Read more…
The AI Unpaid Intern: Why Review Matters
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The metaphor has been everywhere: AI is like an unpaid intern. It drafts, it researches, it summarizes. It is enthusiastic and fast but requires supervision…. Read more…
What Screen Apnea Does to Your Nervous System
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You have done it today. You read a Slack message, an email, or a notification, and you realized you were holding your breath. The phenomenon has a name: scre… Read more…
Digital Friction Isn’t Enough: You Need Separation
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The standard advice for reducing phone use is friction. Delete the app. Log out. Turn off notifications. Make it harder to access the distraction. Read more…
