Awareness Is the Regulation: What an LA Cardiologist Taught Me About Rocking, Humming, and Cold Water

A friend messaged me at 5:31 in the morning.

She is a cardiologist in Los Angeles. She is also a new mother. In the eighteen months since her son was born, both of her parents have stepped out of her life — not through death, which has rituals, but through a quieter, harder kind of leaving.

Her message, on a morning when most of us would not have the words, was this:

"You know I read something about nervous system resetting — one of the techniques is to rock yourself, or hum? So guess what, in this 1.5 yr that my boy has been in my life, I've done lots of rocking and lots of humming. He helping his mamma heal."

I wrote back: "Yes. Cold water on the face too."

She replied: "Oooo that's a good one."

That exchange is the entire thesis of this essay. So let me unpack it.

She was already doing the protocol

Three of the most well-evidenced vagal interventions we have are:

Rhythmic rocking — engages the vestibular system and downshifts sympathetic tone. It is why we rock babies. It is why we rock ourselves.
Humming, chanting, low vocalisation — lengthens the exhale and mechanically stimulates the vagus nerve via vibration in the vocal cords and pharynx.
Cold water on the face — triggers the mammalian dive reflex: a measurable bradycardia and parasympathetic surge within seconds.

She had been doing all three. For a year and a half. With no app, no programme, no wearable, no €349 device. Just a body that needed regulating and a baby in her arms who needed the same.

She thought she was soothing him. She was soothing them both. Her son, as she put it, has been helping his mamma heal.

This is what regulation actually is

There is an enormous industry built on the premise that regulation is something you buy and complete. Take this course. Wear this band. Do this 30-day reset. Finish.

Her story breaks that frame open. Regulation is not a programme you graduate from. It is what your body is already doing, every minute, to keep you alive. The vagus nerve does not wait for you to download the worksheet. The dive reflex does not ask for your email address.

The work — the only work — is awareness. Noticing what is already running. Naming it. And then, with that naming, choosing to do it on purpose instead of by accident.

Why awareness changes everything

When you do not know you are regulating, you cannot do more of it when you need to. You cannot do less of it when it tips into avoidance. You cannot use it as a diagnostic — I have been rocking unconsciously for ten minutes, what is my body telling me?

Awareness turns a survival reflex into a relationship with yourself. It is the difference between a person who hums in the shower because they always have, and a person who notices the humming, recognises it as their nervous system reaching for an exhale, and lets that recognition be a small act of self-respect.

It is the difference between coping and practice.

A short field guide, in her honour

If any of this lands, here is what you already know how to do — you just may not have named it yet:

Rock. Sway in the kitchen. Use a rocking chair. Hold someone you love and let your bodies move together. Five minutes is enough to drop a heart rate.
Hum. Not a tune. Just a low closed-mouth sound on the exhale. Eight breaths. Feel where it vibrates. That is the vagus, working.
Cold water on the face. Cup it in your hands. Hold it to your forehead, eyes, cheekbones for fifteen seconds. Do it before the hard conversation, not after.
Notice. This is the only new step. The next time you catch yourself doing any of these without thinking, pause for half a breath and say, internally: my body is regulating me. That sentence is the practice.

For the ones rocking in the dark

If you are a new parent, a clinician, a person grieving someone who is still alive, a person who has lost the family they were raised inside — and you have been holding yourself together with small, half-noticed gestures you would never call a practice — please know this.

You are not coping. You are regulating. Your body has been doing the work all along.

The only thing left to add is the awareness. And the small, quiet pride of knowing that the thing keeping you upright is not luck. It is you.

There is no finish line. There is only the next rock, the next hum, the next splash of cold water, and the awareness you bring to it.

With thanks to the friend whose 5:31am message became this essay. Shared anonymously with her permission.