Today’s rowing session distance was chosen to match the distance rowed yesterday by one of my training partners, 3,485 meters.
Everything went well until the remaining distance counted down to about 1,200 meters and then heart rate became irregular. So I slowed down a bit but HR didn’t get regular until an hour or more after the session ended.
A screen recording is available at: Indoor Rowing 3485 meters 06072018
Happy rowing to you.