Tricks to Detect Lies on the Spot Usually, real emotions last for no more than 5 seconds. If someone expresses emotion for more than 5 seconds, it’s most likely fake. You can’t possibly have the same facial expression for 10 seconds straight, right? So watch out for this. « Previous Page Next Page » Pages: 1 2 3 4 5 6 7 2020-04-09 news