Our hands and feet get shaky when nervous , why is that?
In: Biology
You’re not used to the adrenaline. Adrenaline is a drug, but just a hormone that does a series of things in your body, most noticeably, opening capillaries and flooding your body with blood to allow muscles to act more rapidly. If I recall correctly, it also enhances the effects of endorphins, making pain a lot less noticeable/ incapacitating. Just like any drug, though, you can develop a tolerance to it and learn how to function on it. Just like the 60 years old alcoholic never shows signs of being drunk, a person constantly in stressful situations doesn’t shake or jitter as adrenaline floods them. Adrenaline also allows the heart to go into overdrive and is used medically in a few conditions in the hospital, but I suspect doctors are very picky and choosey on when to use it and probably want heavy sedatives nearby if they do use it.
This is not the same as a fighter in a ring who is comfortable through exposure, but more like the people who have lived in battlezones their entire life. I wouldn’t be surprised if the constant exposure to adrenaline also caused permanent damage to their brains like other drugs do a well, but am unsure if any research has been done into the topic.
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