Only after several inadequate breaths under such conditions, resulting in the considerable elevation of carbon dioxide and reduction of oxygen in the blood, is breathing effort adjusted.

在这种情况下，只有在几次呼吸不足出现，导致血液中二氧化碳大量增加和氧气减少后，呼吸的力度才得到调整。

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When your mind is dull, alternate nostril breathing brings equal amounts of oxygen to both sides of the brain for improving brain function.

当你头脑迟钝时，交替鼻孔呼吸给大脑两边带来等量的氧气，以改善大脑功能。

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This occurs because during NREM sleep the automatic, metabolic system has exclusive control over breathing and the body uses less oxygen and produces less carbon dioxide.

这是因为在非快速眼动睡眠中，自动的新陈代谢系统对呼吸有排他的控制，身体消耗更少的氧气，产生更少的二氧化碳。

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Scientists say enough oxygen remains in a person's system for several minutes after breathing stops.

VOA: special.2009.06.09

Many other drugs could be used. For example, doctors say breathing oxygen also can help.

VOA: special.2010.03.30

Usually the treatment for carbon monoxide poisoning involves breathing in large amounts of oxygen.

VOA: special.2010.02.02

Macgillivray, who can struggle to walk, sat throughout his six-day trial breathing oxygen through a tube.

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"I was just like, I got to get off the oxygen, the breathing treatment, and get out of the hospital, " Yost said.

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Obesity causes impairments in lung function, such as a reduction in lung volume and an increase in the amount of oxygen used during breathing, but these on its own would not be enough to induce the condition.

BBC: NEWS | Health | Overweight 'higher asthma risk'