Today I decided to debunk Youtube's various body language 'expert' channels, who say they're providing their expert analysis on non-verbal communication, but it's all based on opinion, conjecture and pseudoscience. I explain how, and why, and how this is all based on debunked science that could even affect us all in the court system and at border control, and in the future, even with the use of AI deception detection for job screenings and even in classrooms.