Backpack Workout: Arms edition

 Got a backpack? Want nice toned arms? Let’s get pumping! PREPARATION 1. Obtain a backpack (preferably an old, torn, battered one) 2. Fill it with appropriate weights Textbooks, dictionaries, rocks, cabbages all work as fillers. Use anything available to you. The recommended weight for starters is around three textbooks (15pounds) 3. Wrap the top handle…