You notice that your breathing has speeded up a bit.

你注意到你的呼吸已加快了一点。

《柯林斯英汉双解大词典》

I'll listen to your breathing, and do some tests.

我来听听你的呼吸，做些检查。

youdao

Hunching constricts your breathing, and it makes you look bad as well.

驼背会压迫你的呼吸，也会让你不那么好看。

youdao

Aerobic or cardio exercise gets your heart rate going faster and increases your breathing.

VOA: special.2010.06.08

You regulate your breathing rate in order to accomplish that and we'll talk about this in a couple of weeks.

人们调节呼吸的频率来获得足量的氧气,我们过几周会讲到这方面内容

耶鲁公开课 - 生物医学工程探索课程节选

If your mind wanders, simply bring it back to your breathing.

如果走神了，回到呼吸上。

哈佛公开课 - 幸福课课程节选

For example, try to focus on your breathing and keeping your breaths slow and steady.

BBC: Dealing with anger

Then, redirect your attention to your breathing, noticing its speed, texture and quality.

FORBES: Tired, Stressed Out, Need A break? Recognize It But Don't React

The goal is to be mindful--of your breathing, as a relaxation technique, and of how you're approaching the task at hand.

FORBES: Magazine Article