When something new pops up, the reptilian brain goes into fight-or-flight, friend-or-foe sensing.

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Is this person someone who motivates and stimulates me to be my best, or is this someone whose only appeal is to my reptilian brain?

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This part is commonly called the reptilian brain.

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The reptilian part of our brain tells us to trust what we see more than any other sense .

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The limbic brain is in the middle of the reptilian and cortical brains (both in terms of evolution and physical location).

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