If you can't hide and/or blend in, run away to live another day. Exercise consists of jogging on the spot for 2 1/2 to 3 minute intervals, preferably between drinking cans of beer. Music is a survival item, and you can dance to it. If the Lizard People are nearby, earphones are advisable, unless mashing them with the tracks of your stolen Lizard Tank, in which case external speakers may be used.