Body language is important to analyze the attitude of the interlocutor. Elodie Mielczareck, semiologist, gives us five in the program " Benefit for you" Liars add lots of unnecessary details to their lies, she says.
The blinking of the eyelids shows, for its part, an absence of brain activity. The liar concentrates on what he says and he blinks, logically, less eyelids. If someone lies to you, they will try to hide their hands as best they can.