As I age, every day on the mat is indeed a new sensing experience. Previous ease in poses can't always be expected to be there any more and I need to mind my senses in the moment and take care to be appropriately responsive..
This brings back memories of a workshop I took on how to teach students to write using all of their senses. We took in an object, starting with a rock ,describing it with all of our senses and transferred that experience into our writing.