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Visual guide
Calculations happen on your own device
Your browser
- EnterAge, heart rate and other values
- CalculateProcessed on your device
- ViewSee your reference result
The server records page access. See “Server logs” below.
Values entered in the tools
Values entered in the estimation and comparison tools, including sex, age, heart rate and VO₂Max, are processed only in your device's browser. They are not sent to the operator's server or to third parties, and are not stored on your device.
Analytics and cookies
We currently use no analytics tools or advertising cookies. We will update this page before introducing them.
Server logs
Like a typical web server, the server delivering this site keeps access logs, including IP addresses, dates and times, pages viewed and browser types. These logs are used only to respond to technical problems and protect against unauthorized access.