Why? Well, remember that glycogen breakdown and synthesis actually takes place on the terminal non reducing residues of that polymer. And so adding branches to glycogen increases the number of terminal glucose residues, which raises the rate of glycogen synthesis and breakdown. So if we compare this linear polymer to this branched polymer, we see that we have many more branching points here. And as a result, we have many more of these terminal non reducing glucose residues than compared to this particular case. And so the rate at which synthesis and breakdown takes place on this molecule is much higher than on this linear molecule.