Relexa
Relexa
The vagus nerve comes up constantly in conversations about stress and anxiety, but what it actually is, and how to influence it on purpose, is less commonly explained. Here's the short version, and exercises that genuinely engage it.
The vagus nerve is the longest cranial nerve in the body, running from your brainstem down through your neck, chest and abdomen, connecting to your heart, lungs, and digestive system along the way. It's the primary pathway of the parasympathetic nervous system, the "rest and digest" counterpart to the sympathetic "fight or flight" response, and it's the main channel your brain and body use to communicate about safety and threat in both directions.
"Vagal tone" refers to how readily your vagus nerve activates the calming response when needed. Higher vagal tone is associated with faster recovery from stress, better emotional regulation, and a heart rate that adapts smoothly to changing demands. It's not fixed, vagal tone responds to practice, which is the entire premise behind vagus nerve exercises.
Chronic stress tends to leave the sympathetic system dominant, quick to activate, slow to stand down, partly because vagal tone hasn't been given much reason to strengthen. The exercises below work by directly engaging the vagus nerve's activation pathways, essentially practicing the "stand down" signal on purpose, often enough that it becomes easier to trigger when you actually need it.
Slow, deep breathing, especially with an exhale longer than the inhale, is one of the most reliable ways to stimulate the vagus nerve. The mechanical stretch of the diaphragm on a deep breath, combined with the extended exhale itself, directly activates vagal afferents that signal your nervous system to calm down. This is the shared mechanism behind box breathing, the physiological sigh, and any extended-exhale breathing pattern, they're all, at the physiological level, vagus nerve exercises.
Brief exposure to cold, splashing cold water on your face, holding an ice cube, or ending a shower with 20-30 seconds of cold water, triggers a strong vagal response, part of the body's dive reflex, an evolved mechanism that slows heart rate when the face contacts cold water. This is one of the fastest-acting vagus nerve exercises available, though it's more intense than most people want to use routinely.
The vagus nerve passes close to the muscles at the back of the throat, and activities that vibrate or engage that area, humming, singing, chanting, or even vigorous gargling, mechanically stimulate it. This sounds minor, but it's a genuinely evidence-backed pathway, and one of the easiest to fit into an existing routine, humming for a minute in the shower counts.
Slow, deliberate neck stretches and specific eye movements, looking to one side while keeping your head still, holding briefly, then returning to center, are used in somatic and polyvagal-informed practices to encourage the nervous system to register that it's safe to relax, partly through the neck muscles' close relationship with vagal pathways, and partly through the deliberate, unhurried pacing itself. These tend to feel subtle in the moment but are worth doing consistently rather than judging by an instant effect.
None of these are a quick fix on their own. Vagal tone builds with repeated practice over time, similar to physical fitness, a single session helps in the moment, but the larger benefit, faster recovery from stress generally, comes from doing these regularly, not just when you're already overwhelmed.
Relexa's Vagus Nerve Reset combines slow neck and eye movement with paced breathing in a single five-step guided sequence, built specifically to stimulate vagal tone rather than requiring you to remember and sequence separate techniques yourself.
Slow neck and eye movement paired with breathing, in one guided sequence.