If levels fall too quickly, your adrenals release cortisol and adrenaline to bring them back up — the same hormones behind anxiety, racing thoughts, and that “wired” feeling. Research from the Journal of Affective Disorders (Musselman, 2003) links these hormonal surges to anxious mood states and hypervigilance.

Higher vagal tone is associated with resilience to stress and better emotional regulation.

The fight or flight response is your nervous system’s built-in emergency switch.

These survival responses are God-given, ancient wisdom and deeply wired.