article_snippet.sent: If that person is checking everyone out, everyone'll stop registering the information; if it's just us everyone're interested in, everyone'll signal the brain to give us a nudge that someone's watching.
article_snippet.sent: and it's clear someone has 'caught your eye'.
article_snippet.sent: It activates the nervous system, raises our heart rate and blood flow and stimulates the production of certain hormones.
article_snippet.sent: Studies have shown this to be an almost foolproof way to find out if a stranger is interested in you.
article_snippet.sent: Let your eyes settle on someone so they're aware you've noticed they, then as they're still watching you, slide your eyes around the room before settling back on they again.
article_snippet.sent: This effectively says, 'You instantly attracted me and you're still the pick of the room even after I've checked out the competition.'
article_snippet.sent: If they're interested, most people drop they straight down, then directly up again to lock eyes after a few seconds.
article_snippet.sent: Eye movement studies show we look at different parts of other people's faces depending on the situation and level of attractiveness.
article_snippet.sent: When looking at strangers or in business situations, we make a small triangle by moving we eyes from eye to eye, dipping them as we move across the bridge of the nose.
article_snippet.sent: Staring directly into someone's eyes triggers an arousal reaction.
article_snippet.sent: How the arousal develops depends on who is staring at who.
article_snippet.sent: If it's an unattractive stranger, it will turn into a fear response.
article_snippet.sent: But if you like the look of the person looking at you, the brain interprets the brain as a sexual signal and responds by getting your body ready for sex.