Full article expands on these points, here:
These 8 common mistakes can be boiled down to 2 basic concepts: Accuracy and Context. In reverse order, here are one line summaries of what to do to avoid making these mistakes.
If you stick to these basic rules you will likely have very useful, reliable, and actionable Heart Rate Variability data for decision making.
- Use accurate hardware.
- Determine if paced breathing is right for your situation.
- Track a few other subjective and/or objective metrics alongside HRV dependent on your goals.
- Measure 5+ days per week.
- Measure in the same position at the same time of day (or understand the effects of these differences).
- Measure more than once before making any conclusions (5+ is best).
- High HRV can be good or bad – context helps.
- Low HRV can be good or bad – context helps.