Sleep apnea is caused by the abnormal narrowing or blockage of the airways that allow air to flow into the lungs, which causes sudden drops in oxygen in the blood.

睡眠呼吸暂停因空气流往肺部的通道——气道——的不正常紧缩或堵塞引发，这会导致血液中的氧气含量骤然下降。

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Anger can strangle blood flow in the heart and lead to abnormal heart rhythms, and has been linked to an increased risk of heart disease.

愤怒可以阻滞心脏的血流导致心律不齐并与心脏病危险加剧相关。

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Study has shown that blood flow parameters of most people displays abnormal performance under the condition of exercise load although they are normal at rest.

研究表明，多数人在静息状态下的血流参数虽属正常，但在运动负荷下却表现出明显的异常变化和差别。

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