If your are talking about a young beardie, there is nothing you can do about them running around. It is in their nature to run around and explore. If he is real active, be careful about setting him on anything high such as a chair or your bed without supervision. He will bolt and unfortunately beardies do not have great depth perception and will take flying leaps off of anything and everything. You could always try making some sort of a play area in your room with baracades so that he cannot escape and get lost. This way he can have some space to free roam without the worry.