Feelings and metrics
Low heart rate during intense intervals
Heart rate does not respond instantly. In short intervals it may remain low even when power is high.
Recommended steps
- Do not expect heart rate to rise like power.
- In short efforts, power and sensation matter more.
- Check that the strap works properly.
- Look at average heart rate for longer blocks if you want context.
- If heart rate seems impossible or flat, review the sensor.
- Do not draw big conclusions from one isolated metric.