How

How To

What’s the secret to giving someone the “evil eye” or “bedroom eyes”? It’s all in the size of your pupils, believe it or not. Scientists have actually studied how the way we feel about the things we see affects the size of our pupils (welcome to the world of pupilometrics). You can gain some insight as to how someone feels about you (or someone or something else) by observing changes in their pupils, and you can also affect the way someone feels about you by changing the size of your pupils! So whether you want to stare down an enemy or make someone fall in love with you,[1] this article is for you!