Today’s main workout was 10,000 meters rowing with the goal being to row at steady pace averaging 2:34.3/500 meters.
There were two heart straps worn, each with its own receiver providing a heart rate graph. The Garmin chest strap provided intermittent readings and they were all irrationally low. The Scosche heart strap, which was located on an arm, gave continuous, reasonable, rational readings. You can see their two graphs below. (The RowPro graph is from the Garmin heart strap.) There were a few SkiErg sessions done as warmup. If anyone wants to see their graphs & data, they are viewable via this link to my: online logbook.