Between your brain and your gut, your heart and your breath, a conversation is running every second of the day.
It carries the signal between brain and body. Around 80% of it travels upward, your body reporting in.
Breathwork asks the nerve to fire. Nutrition supplies what firing runs on.
Nine actives across Nerve · Signal · State, for a body that struggles to switch off.
From £1.10 a day · 90-day promise

Exhausted. Still wired.
Stress changes how your stomach feels.
Nothing is happening. Your body is still on.
You slept. You don't feel recovered.
Maybe these aren't four separate problems. They're one system, trying to change state.
Sharp, fast, useful. Just not meant to be where you live.
The state the vagus nerve leads you back to, and the one most of us rarely reach.
Supporting the vagus nerve isn't one intervention. There are three different levers, and they work on different timescales.
Slow breathing, cold exposure and vagus-nerve devices can influence nervous-system state in the moment. They differ in mechanism, cost and intensity.
Sleep, movement, meal timing and daily rhythm shape the baseline your nervous system works from. Slower to change. Broader in effect.
Nerve signalling depends on nutrients, cellular energy and neurotransmitter metabolism. This is the layer Vagus One is designed to support.
One works in the moment. One builds the baseline. One supports the biology.Yona is made for the third.
In for four, out for eight. The long exhale is the half your body reads as safe. Follow the signal: in as it travels to the ring, out as it flows on.
Sit down for this, and stop if you feel light-headed. Slow breathing isn't a treatment. It's a way to give your body a clearer signal that the demand is over.
That was lane 01: an input in the moment. Lane 03 is what the nerve runs on, every day.

For a body that struggles to switch off.
From £1.10 a day · 90-day promise
noticed less brain fog and felt sharper
reported better digestion
had more energy through the day
felt calmer and less reactive to stress
Self-reported survey of Yona customers, 2026. Responses are individual experiences and results vary. Food supplements are not a substitute for a varied diet or prescribed medication.
Formulated with clinical advice from Dr Alisha Damani, MBChB, and clinical nutritionist David McCollum.
What it does, the signs it's struggling, and how to support it.
Read the guide → 02What it feels like day to day, and what actually helps.
Read the guide → 03Breathing, cold, devices and more, ranked by the evidence.
Read the guide → 04How your gut and brain talk, and why stress lands in your stomach.
Read the guide →Yona Vagus One. For a body that struggles to switch off.
4.6★ from 1,000+ reviews · 90-day promise · from £1.10 a day