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The 3 A.M. Wake-Up: Why You Jolt Awake Wired at the Same Hour Every Night
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The 3 A.M. Wake-Up: Why You Jolt Awake Wired at the Same Hour Every Night

You fall asleep fine, then snap awake around 3 a.m. with a pounding heart, wired but exhausted, unable to drift back off. This is not just stress or anxiety — it is a real overnight collision between your metabolism and your autonomic nervous system.

By VagusSkool Team Jul 22, 2026
How the Vagus Nerve Controls Your Heart Rate
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How the Vagus Nerve Controls Your Heart Rate

The vagus nerve is the primary parasympathetic brake on your heart — its tone determines your resting heart rate, heart rate variability, and cardiovascular resilience under stress.

By VagusSkool Apr 9, 2026