Bending is when you use your muscles to make something move in a different direction. For example, if you bent your arm, it would mean you make your arm move so your elbow points inwards instead of outwards. You can also bend things like paper or metal. Bending paper means you are pushing it so that it curves instead of staying flat. Bending metal means you're pushing it so that it looks like a 'u' shape instead of being straight.