Name: FatMax by Afasteryou
Rating: 5 (3 reviews)
Author: Afasteryou

FatMax % by afasteryou
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Train exactly in your personal FatMax zone.  
FatMax % shows in real time how close you are to your individual maximum fat oxidation rate (FatMax).

  * 100%      = exactly at FatMax  
  * 1%–99% = below or above optimum – fat burn drops as you move away  
  * 0%           = at or above Critical Power or Speed – fat metabolism nearly stops  

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HOW IT WORKS
1. Take the afasteryou Powertest (paid, online) or automatically use our Powertest AI via Garmin Sync.
    Both provide your VO₂max and VLamax – essential for accurate substrate usage calculation.
2. Enter the code shown on your Garmin at:  
   https://afasteryou.com/connect/  
3. It may take up to 10 minutes after activation before the data field updates.  
   Until then, a pairing code will be shown.  
4. Add the data field to a Running profile (uses speed) or a Cycling profile (requires power).  
5. Start training and aim to stay close to 100% – that’s your personal fat-burning sweet spot.

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REQUIREMENTS
* Cycling – requires a paired power meter  
* Running – works from speed and altitude; no power sensor needed  
* The field shows a pairing code until VO2max and VLamax are set  
* Works indoors as long as power (bike) or speed (run) is recorded  

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DATA SYNC
* Your metabolic data (VO2max, VLamax) is synced automatically every 12 hours  
* If you complete a new Powertest, updates are applied at the next sync  

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ACCURACY
Calculations are based on the metabolic model by Alois Mader (2003)  
and have been validated against laboratory gas exchange data  
in collaboration with MSH Medical School Hamburg (University of Applied Sciences)

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WHY USE IT
* Train at the exact intensity that maximizes fat metabolism – ideal for endurance, recovery, or weight-loss phases  
* One clear number, smoothed with a 5-second moving average – easy to read even under effort  
* Complements your pace, heart rate, or power data for deeper training insight  

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UPCOMING FEATURES
* AI-based Powertest support for daily updated metabolic values  

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OTHER PRODUCTS
* **Carbs Burned** – tracks cumulative carbohydrate usage based on your personal physiology  
* **Training AI** – adaptive running and cycling training plans, synced via Garmin Training  
* **Activity AI** – post-session analytics for Fat, Carbs, VO2max, VLamax, Training Score, CdA, and even muscle and blood lactate simulation  

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SUPPORT
Setup guide and FAQ: https://afasteryou.com/fatmax  
Email: info@afasteryou.com