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I originally thought there was no way anyone had studied this - it felt like one of those questions we get here a lot where people seem to assume "scientists know (almost) everything" - but I decided to give a check anyways. Short answer There is in fact evidence that some insects could be scared to death. However, the process is a bit less dramatic than ...


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From the perspective of sympathetic nervous system Exercise induced adaptations of heart A common phenomenon in endurance athletes is the athlete's heart /athletic heart syndrome Once athletes stop training, the heart returns to its normal size. You must understand why this type of adaptation is happening in them: Firstly the athletes train to ...


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The physiological condition you are looking for is commonly called Marie Antoinette Syndrome. Under extreme psychological stress, the hair of the person does turn white but not in a single night (takes place slowly over successive days; in a matter of weeks) and cases of this has been reported worldwide generally in warzones. Contrary to what you suggest, ...


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I don't think there is an obvious contradiction here. (1) Mapping neuronal function to the perception of threat (or emotions in general) is often advertised as well-understood, but in fact it is not. Serotonin-concentration-based models (such as the monoaminergic theory of depression) are unavoidably imprecise because ”the brain is not soup”. Additionally, ...


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Interesting question. It's easy to imagine why you would want to suppress inflammation in a fight-or-flight situation. Inflammation can cause painful swelling, fever, and it can dull mental acuity, all of which might hurt your chances of a win or escape. After a little PubMed search, it looks like sympathetic adrenal responses (like cortisol) can actually ...


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I have an answer, but it is not ideal because science's current understanding of the answer to your question is somewhat limited. The detrimental influence of physiological stress upon the heart is thought to occur because the physiological stress causes the cardiovascular system to prepare to meet anticipated energy needs by 1) increasing pulse and blood ...


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Stress is the reaction, which our body reacts against the pressure or tension. There are many impact of stress on the human body, which includes Emotional: Moodiness, short temper, agitation, inability to relax, feeling lonely and always depressed. Cognitive: Memory problems, unable to concentrate, very poor judgment, negative thoughts, always anxious and ...


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