Activity analysis
Heart Rate Drift.
Compare the first and second halves of a steady effort to see whether heart rate rose while pace or power stayed relatively stable. Dash shows the drift percentage and the underlying trends inside Activity Details.
Compare the effort
Dash pairs heart rate with pace for run-like activities and power for rides.
See more than a percentage
Follow both trend lines across the activity instead of relying on one summary number.
Focus on steady sessions
The metric appears only when there is enough moving, heart-rate, and pace or power data for a sustained comparison.
Descriptive training data—not a diagnosis.
Conditions, sensors, terrain, hydration, and pacing can affect it.
