Lateral acceleration makes us feel good. The neurological explanation for this is that acceleration stimulates a set of receptors in the inner ear that connects us with the center of the earth by gravity. A pieces of calcium sits on a membrane so that any change in the relative position of gravity will make this stones roll and there fore there will be some indication that the body is moving relative to the center of the earth.
So if we keep a continues feeling of accelerations, even though very small it creates a state of happiness and puts you in the "zone".
My goal is to make a device that through movement, acceleration and balance will triggering a state of flow and happiness.
Build a drop down, partly battery driven long board, that are controlled by weight transfer.