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Here's why you get butterflies in your stomach when your crush walks by you

"Know that there is a chemical basis to this wacky phenomenon."
 By  Mashable  on 
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Here's why you get butterflies in your stomach when your crush walks by you
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Physician Dr. Roshini Raj explains what causes those butterflies in your stomach.

Love 101 is a new mini-series from Mashable and Bravo. Dr. Raj guides you through the effects of falling in and out of love.

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