Vale the last part (Part 4): from neck to toes. Vale does NOT know she will be tickled. When Vale signed the contract she was warned the experiment consist of an "unspecified STRESS TEST" and that could cause pain, but without knowing we will use tickle. She did know she will be tied and distress, but she didn't know she will be tickled. She is strong, but tickling will break her! This unaware patient is HORRIBLE ticklish and had accepted to participate in this painful "stress test" because she had NO IDEA that we will tickle her.