Moving time and breaks
A track's Overview splits its time into moving, stopped, and unknown. Unknown means the GPS data can't tell whether you moved or paused.
Short pauses count as stopped time. Pauses of one minute or more also appear as breaks in Events. Their start and end are approximate.
Open Track details → Events and click a break or GPS gap to see it on the map.
A GPS gap doesn't prove you stopped; positions are simply missing. Missing or wrong timestamps can make the total time unavailable, even if you include the track in Review.
The normal average heart rate includes stops. The moving average heart rate only counts time in motion.