The other day I lunged after something without thinking and inflamed a muscle in my shoulder. My physical therapist is not happy. I've also been slouching my shoulders when doing a particular stretch... so my therapist wants me to remember to use better posture. My arm has been sore, so I've been holding it in my lap -- this is a tight position and undoes the work of all the stretching exercises I've been doing.
I can feel a throbbing line from my scapula to the underside of my elbow. It hurts and wakes me from sleep. Endothermic crystallizing packets are now my friends.