100年前的生活妙招：如何增大肺活量？

People don't often look back on the early 1900's for advice, but what if we could actually learn something from the Lost Generation?
通常人们不会为了求取生活妙方而去回顾20世纪初的年代，不过如果那个“垮掉的一代”真的能对我们有所助益呢？

The New York Public Library has digitized 100 "how to do it" cards found in cigarette boxes over 100 years ago, and the tips they give are so practical that millennials reading this might want to take notes.
纽约公共图书馆将一组100多年前的香烟盒上的“生活妙招”卡片进行了数字化处理，这些卡片上的小贴士实在太实用了，二十一世纪的我们看到了也会多加留意！

How to Increase Lung Power
如何增强肺活量

Stand erect on the balls of the feet, and with the head held well back. Then inhale deeply until the lungs are fully inflated, gradually exhale, allowing the chest to sink first, followed by the lungs. Repeat exercise several times both moring and evening.
身体直立，前脚点地，头用力向后仰。然后深吸一口气，让肺部彻底充盈，然后慢慢呼出，让胸口先沉下去，然后是肺部。早晚重复这套动作数次。