Today I am out of sorts physically. I made it through the exercise series this morning but it seemed to hurt more than usual. I made it down the steps and out the door with the doggie, and later out the door by myself, but my knees didn't get over hurting.
I suspect a ride on the subway last night did this to me. It wasn't such a long ride, but we stood up the entire trip, pushed on all sides by other riders. I gripped the bars and clutched the papers I was carrying and kept feeling the camera I had in a side pocket, in case anyone near me was an opportunist. So I was tense the whole way and standing up and that's not a good combination. Today I seem to be paying for it.
It sucks when one small thing like a subway ride can have such an effect.