ZenBud
SPORTS PARTNER OF
The off switch — engineered.
what it is
A non-invasive, five-minute session. Deployable individually, team-wide, or across a facility.
ZenBud is a precision vagus nerve stimulator that uses focused ultrasound to shift the body into its parasympathetic state — the recovery-side of the nervous system, where adaptation actually happens.
how it fits into the system
use cases
Recovery isn't just physical. Elite performance depends on how quickly an athlete can move out of sympathetic ("fight or flight") activation and into parasympathetic ("rest and recover") — the state where the body actually adapts to training load.
why it matters
Elite training constantly pushes athletes into sympathetic activation — the state where the body burns hard and adapts little. What separates seasons is how quickly athletes can shift back out.
The Ammortal Chamber is one of the most powerful nervous-system reset experiences we bring into elite environments, layering vibroacoustic, breath, and light-based inputs into a single session. ZenBud was built to make that same shift accessible outside the chamber — in five minutes, from a bench, a hotel room, or the moments before sleep.
Facilities use it as a focused reset between chamber sessions. Teams travel with it. Athletes take it home. Our recommendation for elite programs: Ammortal in the facility. ZenBud in every athlete's bag. The Chamber does the deep, multi-modal reset when the athlete is on-site. The bud extends that same recovery-side activation to every hotel room, every travel day, every night before a game.
That's parasympathetic support that holds up on the schedule elite performance actually runs on.
How It Fits Into the System
- Individual athletes managing training stress and sleep recovery
- Team travel — reset sessions between practices, games, and travel days
- Bench-side and post-competition parasympathetic activation
- Home use for HRV support and daily nervous system regulation
use cases
- Non-invasive activation of the parasympathetic nervous system
- Focused ultrasound — no electrical shock, no gel, no complicated setup
- Designed to support HRV, sleep quality, and post-training recovery
- Portable enough to deploy at home, in the training room, or on the road
Recovery isn't just physical. Elite performance depends on how quickly an athlete can move out of sympathetic ("fight or flight") activation and into parasympathetic ("rest and recover") — the state where the body actually adapts to training load.
why it matters
Elite training constantly pushes athletes into sympathetic activation — the state where the body burns hard and adapts little. What separates seasons is how quickly athletes can shift back out.
The Ammortal Chamber is one of the most powerful nervous-system reset experiences we bring into elite environments, layering vibroacoustic, breath, and light-based inputs into a single session. ZenBud was built to make that same shift accessible outside the chamber — in five minutes, from a bench, a hotel room, or the moments before sleep.
Facilities use it as a focused reset between chamber sessions. Teams travel with it. Athletes take it home. Our recommendation for elite programs: Ammortal in the facility. ZenBud in every athlete's bag. The Chamber does the deep, multi-modal reset when the athlete is on-site. The bud extends that same recovery-side activation to every hotel room, every travel day, every night before a game.
That's parasympathetic support that holds up on the schedule elite performance actually runs on.
How It Fits Into the System
how it fits into the system
use cases
why it matters
Recovery isn't just physical. Elite performance depends on how quickly an athlete can move out of sympathetic ("fight or flight") activation and into parasympathetic ("rest and recover") — the state where the body actually adapts to training load.
How It Fits Into the System
The Ammortal Chamber is one of the most powerful nervous-system reset experiences we bring into elite environments, layering vibroacoustic, breath, and light-based inputs into a single session. ZenBud was built to make that same shift accessible outside the chamber — in five minutes, from a bench, a hotel room, or the moments before sleep.
Facilities use it as a focused reset between chamber sessions. Teams travel with it. Athletes take it home. Our recommendation for elite programs: Ammortal in the facility. ZenBud in every athlete's bag. The Chamber does the deep, multi-modal reset when the athlete is on-site. The bud extends that same recovery-side activation to every hotel room, every travel day, every night before a game.
That's parasympathetic support that holds up on the schedule elite performance actually runs on.
use cases
- Individual athletes managing training stress and sleep recovery
- Team travel — reset sessions between practices, games, and travel days
- Bench-side and post-competition parasympathetic activation
- Home use for HRV support and daily nervous system regulation
Traditional vagus nerve stimulation devices use electrical currents, which can cause discomfort and only penetrate shallowly. ZenBud uses focused ultrasound — the same technology used safely in medical imaging for decades — to reach the vagus nerve without electrical shock or gel. This allows for deeper, more consistent stimulation delivered comfortably.
Why ultrasound
purchase
purchase
BreathSource Integration
Every ZenBud comes with access to BreathSource — a guided breathwork platform that pairs with sessions for deeper parasympathetic activation and long-term nervous system training.
The vagus nerve runs from the brainstem through the heart, lungs, and gut — playing a central role in how the body regulates stress and recovery. Its auricular branch, located in the ear, is uniquely accessible from the surface, making it the target of choice for non-invasive vagal nerve stimulation.
the vagus nerve
purchase
purchase
- Increased heart rate variability (HRV)
- Reduced resting heart rate
- Deeper, more restorative sleep
- A measurable shift out of sympathetic activation
How ZenBud Delivers
ZenBud is a lightweight headset with dual VNS buds that make two-point contact with the auricular branch of the vagus nerve. During a session, focused ultrasound activates the parasympathetic response — the recovery-side of the autonomic nervous system.
Traditional vagus nerve stimulation devices use electrical currents, which can cause discomfort and only penetrate shallowly. ZenBud uses focused ultrasound — the same technology used safely in medical imaging for decades — to reach the vagus nerve without electrical shock or gel. This allows for deeper, more consistent stimulation delivered comfortably.
Why ultrasound
purchase
purchase
BreathSource Integration
Every ZenBud comes with access to BreathSource — a guided breathwork platform that pairs with sessions for deeper parasympathetic activation and long-term nervous system training.
The vagus nerve runs from the brainstem through the heart, lungs, and gut — playing a central role in how the body regulates stress and recovery. Its auricular branch, located in the ear, is uniquely accessible from the surface, making it the target of choice for non-invasive vagal nerve stimulation.
the vagus nerve
purchase
purchase
- Increased heart rate variability (HRV)
- Reduced resting heart rate
- Deeper, more restorative sleep
- A measurable shift out of sympathetic activation
How ZenBud Delivers
ZenBud is a lightweight headset with dual VNS buds that make two-point contact with the auricular branch of the vagus nerve. During a session, focused ultrasound activates the parasympathetic response — the recovery-side of the autonomic nervous system.
Traditional vagus nerve stimulation devices use electrical currents, which can cause discomfort and only penetrate shallowly. ZenBud uses focused ultrasound — the same technology used safely in medical imaging for decades — to reach the vagus nerve without electrical shock or gel. This allows for deeper, more consistent stimulation delivered comfortably.
Why ultrasound
purchase
BreathSource Integration
Every ZenBud comes with access to BreathSource — a guided breathwork platform that pairs with sessions for deeper parasympathetic activation and long-term nervous system training.
The vagus nerve runs from the brainstem through the heart, lungs, and gut — playing a central role in how the body regulates stress and recovery. Its auricular branch, located in the ear, is uniquely accessible from the surface, making it the target of choice for non-invasive vagal nerve stimulation.
the vagus nerve
purchase
- Increased heart rate variability (HRV)
- Reduced resting heart rate
- Deeper, more restorative sleep
- A measurable shift out of sympathetic activation
How ZenBud Delivers
ZenBud is a lightweight headset with dual VNS buds that make two-point contact with the auricular branch of the vagus nerve. During a session, focused ultrasound activates the parasympathetic response — the recovery-side of the autonomic nervous system.
purchase
purchase
Traditional vagus nerve stimulation devices use electrical currents, which can cause discomfort and only penetrate shallowly. ZenBud uses focused ultrasound — the same technology used safely in medical imaging for decades — to reach the vagus nerve without electrical shock or gel. This allows for deeper, more consistent stimulation delivered comfortably.
Why ultrasound
purchase
BreathSource Integration
Every ZenBud comes with access to BreathSource — a guided breathwork platform that pairs with sessions for deeper parasympathetic activation and long-term nervous system training.
The vagus nerve runs from the brainstem through the heart, lungs, and gut — playing a central role in how the body regulates stress and recovery. Its auricular branch, located in the ear, is uniquely accessible from the surface, making it the target of choice for non-invasive vagal nerve stimulation.
the vagus nerve
purchase
purchase
- Increased heart rate variability (HRV)
- Reduced resting heart rate
- Deeper, more restorative sleep
- A measurable shift out of sympathetic activation
How ZenBud Delivers
ZenBud is a lightweight headset with dual VNS buds that make two-point contact with the auricular branch of the vagus nerve. During a session, focused ultrasound activates the parasympathetic response — the recovery-side of the autonomic nervous system.
purchase
The science within
The right system doesn't just push performance forward. It brings the athlete back.
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