What am I doing hanging upside down? Because there isn’t an up or down in s…

What am I doing hanging upside down? Because there isn’t an up or down in space, the GRASP experiment aims to understand the impact of gravity on hand-eye coordination, helpful for treating disorders of the vestibular system & space exploration http://blogs.esa.int/alexander-gerst/2018/06/29/grasp-experiment/ …