@barbarn - not a stupid question at all . . . it's one I would have asked too. Actually in with the box of patches, the company has included a picture/outline of the human form: front, back, and side views, complete with shadowed areas where the patches can be placed. They are to be rotated every day, and there is a total of about 16 different points where they can be put. I write a number on the area where i am placing a patch that night so I can keep track, otherwise I would forget. It makes it much easier to remember and manage. I hope that makes sense - I don't think I explained it every well.