"Fear is a neurophysiological response to a perceived threat. Fear activates our fight-or-flight response by stimulating the hypothalamus, which directs the sympathetic nervous system and the adrenal-cortical system to prepare our bodies for danger. This can happen suddenly with a surge of stress hormones into our bloodstream, or we can experience a slow drip of anxiety that creeps up on us as dread. We inherited this 'survival circuitry' ..." (read more)
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