(Original from internet)
* Deep breath
You can take a deep breath anywhere and at any time. Take a deep breath until you feel the lungs filled with nitric oxide (Or nitrous oxide? How does it work? -- translator). This substance makes you happy and alert.
* 做深呼吸
不论在何时何地都可以做深呼吸。深吸一口气,直到感觉肺部已充满了氮氧化物,这种物质可以使人更加开心,更加警觉。