I found a paper in my Yoga teachers training pile – and on it is a short phrase written in large capitalized letters that cover the entire page. If memory serves, I wrote it down during a retreat as my teacher was talking. I don’t recall if it was a sponatenous phrase or if he was quoting another source – but it is a gem of wisdom:
A change in breath can diminish the experience of limits. A breathing pattern is usually committed to memory and the limits are associated with it. When the breathing is altered, the memory of the limit disappears and we can explore beyond.