A childhood belief about general

When I was about 5 years old I had this book called "The Human Body" its was almost as tall as me and said how your body worked ... all different parts .. it was really cool , but in it , it would show for example the muscles in your arm and they were represented by little strings/ropes and they were being pulled by little men in what looked like train conductor overalls , and in the brain there were some really stressed out people answering telephone calls from allover your body .... I beleived for acouple of years that this was true and that your body was controlled by little people ... some of whom were wearing little train conductor overalls << I felt VERY bad for the ones who I saw in the "waste removal" section who sorted your poop and pee into sections according to colour and contents with big metal spoons ....