In science, fainting is associated to a sudden loss of consciousness. People faint because their brain is suddenly and briefly deprived of enough oxygen and it can be the sign of a serious problem or something that happens just once and is asymptomatic. A slowdown in heart beat and dropping blood pressure are the signs of fainting, which can be rarely avoided when it occurs. Many people, though, suffer from fear of fainting, even though they haven’t passed out even in their lives.
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