Experiment: Body Presence

You will need a rock. Select a safe space free of obstacles.
You must be able to walk forward at least six feet without encountering furniture, trees, a wall, etc. Having more open space is fine.
Walk from one end of the space to the other and lay the rock down.
Then return to the starting point.

Close your eyes, walk to your rock and lay your hand on it.
Do this without peeking and see how close you get.