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It is a reaction of the autonomic nervous system.

The blush, as a matter of fact, is a sign of heightened blood circulation. The ANS is held responsible for the heartbeat; sweating, breathing, moving, etc..., which speed up when the brain picks up signals from the environment and an alert, as I would say, goes off.

And why do we not blush around friends or family? It is the simple fact of not tending to care on how you look or what they think and you are not attracted to them. You are very calm around them. When your crush is there you will flush red like a tomato because what happens in your mind is a far cry from what happens there with family; thoughts deliver messages to a part of the brain which is bound to hormonal secretion, etc. So when you catch sight of your crush, your heart rate will increase. And because it beats faster you will blush. That's also why the love symbol is a heart! <3

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11y ago

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