Question 1

How do I add a workout to Garmin Connect without a watch?

Accepted Answer

Configure the sport, duration and intensity in FIT Generator, download the generated .fit file and import it into Garmin Connect via Import Data. The file contains per-second heart rate records, calories, Training Effect, TSS and time in zones.

Question 2

How is maximum heart rate estimated?

Accepted Answer

Without a measured value, HRmax is estimated from age using the Tanaka formula (208 minus 0.7 times age). For women the Gulati formula (206 minus 0.88 times age) is used, which was validated on over 5000 women. A self-measured value always takes precedence.

Question 3

Does the generated FIT file work with Amazfit Zepp?

Accepted Answer

Yes. Zepp reads the per-second heart rate records, so PAI accumulates correctly and Training Effect is displayed. Zepp's own training load score is only calculated for native device recordings, which is a platform limitation.

Question 4

Is my data uploaded anywhere?

Accepted Answer

No. The heart rate simulation, all metric calculations and the FIT file encoding run entirely in your browser. Nothing is sent to a server and no account is required.