The stress response system (fight-or-flight) is originally adaptive: when encountering a threat like a tiger, the pituitary gland secretes adrenocorticotropic hormone, cortisol is released, heart rate increases, digestion turns off, and the organism mobilizes for physical exertion.
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Unidentified Speaker — WHY Exercise is so Underrated (Brain Power & Movement Link) [DsVzKCk066g]Evidence Quote
“Let's take a look at the original stress scenario: You're chilling out eating berries or whatever and then you see a tiger advancing towards you. Your fight or flight response switches on, the pituitary gland secretes adrenocorticotropic hormone, cortisol is released, your heart rate shoots up, your digestion turns off and you really start moving.”
Created: 8/11/2026, 1:14:22 AM
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