I only realized a few weeks ago that when I drink coffee in the morning, there is often a point at which I feel like stretching, which makes sense because stimulants activate muscles, which makes them tense up.
Another thing that tenses up muscles is anxiety. Anti-anxiety medication does the opposite, and so do deep relaxation techniques.
“I feel like stretching” is an interpretation of something my muscles are made to do sometimes, just as “I feel tense” is an interpretation of something similar in a different conceptual context. One has positive connotations, the other negative.
Bottom up, top down. Activation, interpretation.
Our being is layered and wired up in circular ways and we don’t necessarily always have a clear grasp of the direction of causation in these loops we spin through.