Get street cred for your sweat. The Strava real-time Relative Effort app analyzes your heart rate during a workout and ranks your total activity effort. The deeper you dig and the longer you hold, the higher your Relative Effort.</p><p></p><p>Relative Effort requires a built-in optical heart rate sensor or a paired heart rate monitor. Be sure your Garmin and Strava heart rate zones are the same.</p>
- Computing Relative Effort
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