Again, i know i am outside the "norm" here.
But if you were stuck in a room your whole life, one that wasnt as long as you are tall or as tall as you are tall, wouldln't you eventually stop doing circles in it too? In the wild do you think balls or carpets or olives stick to a 4x2' square? Not a chance.
My ball explores every inch of his cage when he is exploring. There are constantly stories of snakes escaping and leaving entire rooms, not to mention cages.