Combining the helium and hyperoxia slows down the frequency of breathing while making the air easier to breathe.

氦氧联用减慢了呼吸频率从而使空气更容易呼出。

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Another experiment demonstrated that physical exercise, which was sufficiently vigorous to double the rate of breathing, had no effect on the frequency of yawning.

另一项实验表明，体育运动——尤其是剧烈的运动——可以使呼吸频率增加一倍，但这对打哈欠的频率没有影响。

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If you can slow down the rhythm of your breathing, the frequency of your heart beat down.

如果能让呼吸的节奏放慢，心跳的频率就会跟着降下来。

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If you can slow down the rhythm of your breathing, the frequency of your heart beat down.

如果能让呼吸的节奏放慢，心跳的频率就会跟着降下来。

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