Glossary: Stamina
Stamina is a new metric by modern Garmin devices trying to quantify your real-time capacity based on power and heart rate data. In contrast to the well defined W'bal, which looks at work above FTP only, Stamina handles sub-maximal performances and very long activities as well.
See also
References
- Understanding Real-Time Stamina, support.garmin.com
- Garmin Stamina Explainer, the5krunner.com