i had a non-MA experience that dan's words above on fascia and knitting the body together aptly describe last night, when attempting the butterfly swim stroke. i am not a swimmer so never learned this stroke, but I sorta got it down from watching my son learn it.
compared to the other strokes, it seems very powerful yet it felt like it is just whole body coordination and very little local "muscling" if at all. a literal wave starts with the arms and heads diving in and transmits all the way to the toes. of course it's from muscle but felt more like whole body knitted together + power from its own momentum. maybe any real swimmers here can describe it better and explain the analogy.
also, there does seem to be "something else" in IMA that isn't at all like those swim stroke mechanics, but that is virtually impossible to talk about. neither tendon nor fascia explains it, but "mystical", "qi", whatever, can't really do it either, in my view. you know it when you feel it.