The size of your pupils is an excellent measure of cognitive effort or essentially how hard your brain is working.
The pupil of your eye expands up to 45% when you look at someone you love.
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Random|Highest Ranking #1 in random| Ever wondered why you feel the way you do, or do the things you do? The way your mind functions has a lot to do with the way you are, and the things you do. It's amazing how every 'unique' mind, at some level, functio...
