The lower reptilian brain is the “fight-or-flight” part of your brain. This region of your brain is all about acting and reacting, without a lot of thinking going on. It can also leave you frozen in a perceived crisis—the “deer-in-the-headlights” response. The middle mammal brain is the seat of your emotions. (Call it your inner drama queen.) It’s where powerful feelings—love, joy, sadness, anger, grief, jealousy, pleasure—arise. The upper or primate brain is like Star Trek’s Mr. Spock: It’s the part that weighs a situation logically and rationally and generates a conscious plan of
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