example when we walk, we tend to transform our walk patterns to a wave function, till some unexpected change in the ambient appears, this frees our brain and allow us to think in another thing. try to walk with a pattern that does not tend to stability, while that you will never be able to use your brain to do another task, just like you brain wants stability the universe also want it.
this phenomenon not only happens when we walk, we do this all the time at multiples level in the hierarchy of the mental models that we use for describing the world or our actions, which some times result in bad predictions but allow us to the think in other complex problems on a higher level of abstractions.