8.They only start to gesture with their hands after they finish talking.
We’ve previously talked about the pupils dilating every time we tell a lie, well, the same thing happens with our hands. When you’re trying to fabricate a story, your brain is working on processing more complex information, causing you to stop gesticulating with your hands while you’re telling a lie.
According to Traci Brown, a body language expert who has participated in a deception training program with members of the FBI, “The mind is doing too many things including making up the story, figuring out if they’re being believed, and adding to the story accordingly. So normal gesturing that might normally happen just before a statement happens after the statement.”
Make sure to also check: 8 Secrets Your Body Language Reveals About You.