The spine is the frame that everything else responds to. If it arches, collapses, or twists without control, the shoulders, hips, and knees start compensating. Neutral spine is the reset point before moving into backbends, folds, or rotational work.
Find it by stacking the ribcage over the pelvis, lengthening the crown of the head, and softening any unnecessary curve in the lower back. The goal is not rigidity. The goal is a position the body can hold without chasing balance through tension.
When the practice space is set up for repeatable alignment work, the mat needs to stay planted while you adjust. That is why the EDIT yoga range focuses on heavy-duty, non-slip materials that anchor the practice from the ground up. See the yoga guide for the wider practice structure.