The New Standard of Muscle Recovery.

Myth reads your nervous system before and after every workout. You'll see exactly what the session cost you.

Try Now. Risk-Free.
99.7% accuracy Validated against clinical ECG
60 seconds Total measurement time per session
30 days To a recovery model built on your body
99.7% accuracy Validated against clinical ECG
60 seconds Total measurement time per session
30 days To a recovery model built on your body

Validated by science. Not by marketing.

Up to 0%
Faster return to baseline HRV
0 min
To full protocol activation
0%
Of users report reduced soreness by week 2
0K+
Hours of recovery data analyzed

Your recovery is personal. So is Mȳth.

Athletes

Recover between sessions, not between seasons.

Mȳth targets the systems you stressed during training and accelerates repair while you sleep. You wake up ready to go again — not still paying for yesterday.

High Performers

Wake up already sharp.

Your brain needs recovery as much as your body. Mȳth works on both overnight — so the 6 a.m. version of you is already clear-headed.

Chronic Pain

Relief that doesn't ask anything of you.

You've tried the routines, the devices, the discipline. Mȳth works while you sleep — no effort, no scheduling, no willpower required.

Restless Sleepers

Eight hours that actually count.

The problem isn't how long you sleep — it's how little your body recovers during it. Mȳth works in your deepest phases to turn wasted hours into real restoration.

Biohackers

Track it. Improve it. Feel it.

Monitor 12 recovery biomarkers nightly and watch them compound over weeks. Mȳth doesn't just measure your recovery — it drives it.

Weekend Warriors

Push hard Saturday. Move freely Monday.

You play like an athlete but recover like everyone else. Mȳth bridges that gap — so your weekday body doesn't pay for your weekend life.

Trusted by Athletes.
Backed By Research.

99.7%
Accuracy Against Clinical-Grade ECG*
60s
Total Measurement Time Per Session
30d
To A Recovery Model Built On Your Body
Our Story

Built By Us. U.S. Owned.

Every recovery tool on the market told you the same thing: here's your score. A number. A color. A vague suggestion to "take it easy." None of them answered the only question that actually mattered after a hard session: what did today's training cost my body — and what do I owe it back?

The founder spent 5+ years chasing that answer through every wearable, every app, every overpriced subscription that promised clarity and delivered dashboards.

This isn't a tech company that discovered fitness. It's a training tool built from the inside out.

Mȳth exists because one person got tired of buying products built by committees who don't train, funded by investors who don't care, and designed by teams who've never had to choose between pushing through and pulling back with real consequences on the line.

No outside investors. No venture capital. No board to answer to. Solo-founded. U.S.-owned. Designed, tested, and shipped from the United States under a single holding entity — because the fastest way to build something that actually works is to remove every person from the process who doesn't have skin in the game.

Solo-Founded U.S. Owned Single Entity

Frequently Asked Questions

Is the measurement actually accurate?
Yes. Myth takes stationary 60-second chest readings while you stand still, which is the condition where optical PPG produces its highest accuracy. A 2026 validation study confirmed 0.992–0.997 concordance against ECG reference under these exact conditions. Most wrist wearables measure during sleep or movement, where accuracy drops significantly.
What does the device actually measure?
Myth measures heart-rate variability (HRV) and heart rate using a clinical-grade optical sensor on your chest. It takes one reading before your workout and one after. The difference between those two readings — the session cost — tells you exactly how much autonomic stress the workout put on your nervous system.
How do I use it?
Stick the adhesive mount to your sternum. Snap Myth on magnetically. Open the app and tap Begin Workout for a 60-second pre-workout read. Train. Tap End Workout for a 60-second post-workout read. Your session cost, recovery score, and tonight's recovery plan appear instantly.
Does it replace my Whoop or Oura?
No — it measures what they can't. Your wearable tells you how last night went. Myth tells you what today's session cost. These are different measurements taken at different moments answering different questions. Many users use both: their wearable for sleep and daily trends, Myth for real-time session cost and recovery planning.
Will the adhesive stay on during a hard workout?
Yes. The adhesive is medical-grade silicone — the same category used in continuous glucose monitors worn for 10–14 days including workouts and showers. Myth uses the same adhesive for roughly 60–90 minutes. The holding force is approximately 9 times greater than the maximum dynamic force during explosive exercise.
What if the adhesive irritates my skin?
The adhesive is ISO 10993 biocompatible, hypoallergenic, and rated for sensitive skin. These are the same adhesive families used in medical patches worn for days at a time. For a 60–90 minute training session, skin irritation risk is near zero. Fresh mounts are delivered monthly so you always have a clean one for every session.
How long does the battery last?
Months per charge. Myth only wakes for two 60-second readings per session, then returns to deep sleep drawing less than 5 microamps. The magnetic charging dock (USB-C) charges the device fully in about 70 minutes. Set it on the dock and it snaps into place automatically.
What exactly is a "session cost"?
When you train hard, your nervous system shifts from rest mode into stress mode — a measurable event called vagal withdrawal. Your HRV drops and your heart rate climbs. Myth captures this shift by comparing your pre-workout and post-workout HRV. The size of that gap is your session cost — a direct, honest measure of how much the workout took out of your body.
What phone does it work with?
Myth works with iOS via Bluetooth Low Energy 5.0. The device pairs automatically while resting on the charging dock — no manual Bluetooth pairing needed. Open the app, set the device on the dock, and it connects and binds to your account. Android support is planned for a future update.