Cognitive focus is not a personality trait. It is a physiologic state governed by glucose availability, autonomic balance, sleep pressure, and neuromodulatory signaling.

How your body measures stress before your mind knows it's there.

Why early shifts in HRV and RHR can precede how you feel.

Why your body’s signals don’t always match your thoughts, and why that matters.

Your body speaks in patterns, not snapshots, and here's how to interpret the signals.