I’ve known people that easily faint at the slightest sight of blood, they don’t necessarily have to be the one bleeding, just seeing a little bit from someone else causes them to faint. How can something that small causes your whole body to shut down?
In: Biology
It’s an evolutionary remnant. Something gross could potentially kill you back in the day. So throwing up, being scared or feeling uncomfortable is a way to protect yourself and get away from the threat.
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