"When a person first hears that the simple act of humming has various benefits, it sounds way too simple — almost ridiculous.
But when we look under the hood of the human body,
we begin to understand why."

listen & learn
ancient ohm chant · feel it
🫁
nitric oxide surge
15×
Humming increases nitric oxide production in the sinuses up to 15 times compared to quiet breathing — improving oxygen flow to the brain and body.
🧠
vagus nerve activation
The vibration of humming directly stimulates the vagus nerve — your body's master switch for calm — reducing cortisol, slowing heart rate, and shifting you out of fight-or-flight.
💓
flow state
Humming creates a rhythmic rise and fall of heart rate in synchronization with breath — what researchers call heart rate variability coherence, the neurological signature of flow state.
🔬
clinically studied
A 2018 meta-analysis of Bhramari Pranayama (humming breath) found consistent reductions in blood pressure, heart rate, and stress markers across all reviewed studies.
Sources: Journal of Alternative & Complementary Medicine · IFLScience · Nitric Oxide Journal · Shape / Dr. Arielle Schwartz
explore
a new kind of breathing app

breathe in.
hum out.

simple. calming. yours forever.

An ancient practice for stressful times.
We just help you remember.

01
open the app
A new calming scene greets you every session — ocean, forest, fireplace, night sky and more.
02
breathe in
Follow the vertical slider upward with a slow, natural inhale. No counting. No prompts. Just follow.
03
hum out
As the slider descends, release a gentle hum. Feel it resonate through your chest. Repeat eight times.
hum4health
breathe in
hum out
🌊 ocean 🌿 forest 🌄 sunrise 🌅 sunset 🌙 night sky 🔥 fireplace

One price. Everything included.
No subscriptions. Ever.

hum4health
$5
one-time · yours forever
  • 6 rotating calming scenes
  • breathe in / hum out guidance
  • 8-cycle session tracker
  • daily reminder scheduler
  • installs on your home screen
  • works offline · no ads · no data
get your hum4health app now — only $5