Originally Posted by
burger0014
Today I noticed the TSS on my garmin ticking up while coasting down a hill not pedaling, zero power for over 45 seconds and it was like .3 TSS. Is that normal?
It's an artifact of how the calculation is done. TSS is calculated from NP, and NP is typically calculated using average power over a short window of time. So, even after you stop pedaling, your average power over the past (say) 30 seconds is still above zero.
It's a useful reminder that these numbers are all just modeling real-world effects, not actual measurements.
And no, you are not accumulating any training load while coasting.