Pick up one side of the dough with both hands and pull it up, just before tearing, and fold it over to the other side.
I stretch and fold more vigorously at the beginning of bulk than usual since it is extraordinarily slack and extensible (due to this recipe’s high hydration and autolyse). Pick up one side of the dough with both hands and pull it up, just before tearing, and fold it over to the other side. Rotate your container and repeat 4 or 5 times. That is one set.