At my kitchen table my upper back kept tensing, I assumed massage was optional

https://connerjekh417.quantlynix.com/posts/north-york-knee-replacement-patient-journey-a-physio-s-day-by-day-view

Sitting long my upper back kept tensing, I figured massage was optional, then by the third physio the therapist found the stubborn knot and eased it noticeably.