(Men’s Health) Marc Salem is a mentalist by trade. That is, he makes a living toiling in minds. We know what you’re thinking: “Cool, I’d love to be able to read thoughts.” Who wouldn’t? Then you’d know what your boss really thinks of you. Then you’d have advance warning that your girlfriend is going to dump you — so you could beat her to the punch. Well, it can be done based on a sound principle of nature: The subconscious always rats out the conscious. By understanding how the brain and body react in certain situations, you can train yourself to decode the nonverbal messages people unwittingly transmit. As Yogi Berra once said, “You can observe a lot just by watching.” Look for…

Mismatched gestures
If your boss’s hand motions don’t match what he’s saying, he could be trying to cover something. For example, he says, “I think you’re doing a good job,” but he points at you after he says it.

Tone shifts
Most people speak steadily. Pitch changes quickly corrected signal truth-stretching. Same goes for voice cracks or changes in rhythm.

Avoidance or overfriendliness
You know your boss… that’s the baseline. If he becomes uncharacteristically aloof or buddy-buddy. You can bet that changes are afoot.

False smiles
These are easy to spot: Remember, the insincere smile vanishes quickly; the legitimate one appears and fades slowly.

Eye darts
Separate parts of the brain control real memories and fabrications. How his eyes move will clue you in.