The Amazing Stickie loves to maintain her spine mobility. Those of us who have osteopenia or osteoporosis should not do this exercise along with her because spinal flexion is risky for those folks, but the rest of us can follow her good example in doing the standing roll down.
Stickie begins standing up with her usual good posture. She inhales to lengthen her spine. As she exhales, she nods her head forward and then curves her spine forward one vertebra at a time. She keeps her weight toward her toes because as her torso bends forward, her hips want to push out behind her and she wants to prevent that as long as possible. When she has curled forward as far as her body allows, she reverses the process, again keeping her weight toward her toes so that she can get her hips aligned over her legs as early as possible to provide a strong and stable base for her re-stacked spine.
Stickie often does three or four repetitions.