what does this little rectangle mean?
That shows you highest heart rate recovery for the activity. If you click the HRRc number on the summary you get this popup:
HRRc measures how quickly you recover after a hard effort. It is the largest drop in HR over 60 seconds starting from a HR of at least threshold. The general idea is that, the faster or greater your drop in heart rate, the better your recovery - www.pezcyclingnews.com. The minimum HR required to trigger the calculation can be configured for each sport in /settings.
Oh! So I went up a steep hill and when I got to the top my HR dropped. That’s nice. My HRRc min HR is set to 170 but I don’t always see the rectangle even when my HR goes above that number.
You need to be above the threshold number, set in the settings page, for at least 60 seconds (continuous).
Ohhh! Thanks.