In the sorts of folk-dancing I do--contra, and English Country--dancers are frequently reminded to "give weight." By which is meant many things that are much easier to do than explain. If, for instance, you are holding someone's hand, pull or push a bit as you move closer or further; make the force of your hand reflect the movement of your body. There has to be a bit of tension in the dancers arms, so that the dancers can move together.
It occurred to me, not so very long ago, that this applies in other relationships than the brief connections of those dances; a bit of push and pull is normal when people are doing things together, whether for work or as friends or lovers.