For the trackle evaluation, the warm-up phase – the time when you insert the trackle – and the cool-down phase – the time when you take out the trackle for cleaning and synchronising – are cut off and not included in the calculation of the basal body temperature value.

These warm-up and cool-down phases are also cut off every time you remove the trackle during the night, to use the toilet, for instance. From this adjusted series of measurements, the system then determines the lowest value of the night – this is the basal body temperature value that is sent to the app.