I was looking at the video for RC/PE1, the Hinge Row and it seems very clear to me that the person has his glutes on the floor. He is essentially sitting down. But the description says "Begin with the glutes and shoulders just off the ground".
Does this mean the glutes should always be off the ground during the set? I really can't see it with the video. Also, this hinge movement feels very unnatural. I find myself constantly doing a normal row where there is no hinge.