inner tension = outer tension

Let us compare how we release a tense muscle or spasm compared to how we release a hold or lever on us:

1 Note how we are held or tensed up what is happening when we move and how does it feel
2 Start small relaxed movement in the free parts of us along with the breathing so tension and pain is devided and released
3 allow our body to align with the direction or rotation of the hold or spasm so we can move ourselves with it instead of against it (you may imagine it as working along the grit of sandpaper instead of rubbing against the grit)
4 Go home