Idiomotor phenomenon is when we move our body automatically, even though we didn't mean to. It happens when our mind and body work together without us even realizing it. For example, if you are thinking about jumping, and then you jump without even meaning to, that's an example of ideomotor phenomenon. Another example is if you're about to sneeze, and then before you realize it, you sneezed! All of this is happening without us having to tell our body what to do - our mind and body are working together on their own.