New study reveals how to tell someone is lying in less than 5 seconds

Head

If someone continuously shakes their head when they are denying something, it's a sign that they're lying. If they were genuinely telling the truth, they wouldn't feel the need to physically deny it.

Face

When someone is lying, there will be a split second when their true feelings will sprint across their face. Take Christmas for example, remember your brother's face when he opened that pair of pink fluffy socks from your grandma before he said he loved them? Yeah, exactly.

Hands

Apart from certain politicians *ahem, Trump, ahem*, no one needs to use their hands so frequently in order to express themselves. Frequent hand gestures such as pointing, fidgeting and scratching are clear giveaways that someone is shirking the truth.

Speech

If someone is consistently taking breaks when explaining themselves, it's because they need a bit of time in order to make up their BS. If you're telling the truth, you shouldn't need to think about what you're saying.