When someone lies, their body often sends involuntary signals that expose the deception. Here are some common body language cues that indicate lying, according to Business Insider. A liar may avoid eye contact, feeling ashamed or guilty about their words. They may also make frequent or unnatural head movements, like pulling their head back, tilting it to the side, or bobbing it repeatedly. Signs of tension and anxiety, such as fidgeting with fingers, shifting feet, or biting lips, can also be giveaways. Additionally, a liar might stammer or stutter, especially when asked direct questions. Covering their mouth or touching their lips is another common indication of lying, as if they are trying to prevent the lie from escaping. Increased blinking rate is also a telltale sign, possibly an attempt to hide their eyes from the speaker. A change in breathing pattern, becoming faster due to anxiety and tension, can further suggest deception. Repeat words or phrases deliberately, as if trying to convince themselves and others of their honesty. Finally, frequent and awkward foot movement could reflect discomfort and tension.