Second wind 再次振作起來
當我們形容某人有 a second wind 的時候，這就是說他們恢復了精力，再次崛起或繼續做什麼事情。
I usually feel a bit tired after lunch but get a second wind around 4pm.
Observers said Barack Obama was judged to have lost the first Presidential debate with Republican challenger Mitt Romney, but got a second wind in the second and third debate.
To throw caution to the wind 意思是把顧慮和擔憂都拋在腦後，大膽的去做事。有時候也指辦事欠考慮。
Sometimes you have to throw caution to the wind and go with your heart. Do what you believe in.
You know what? I'm going to throw caution to the wind and bet all my money on that racehorse. I think it's going to win.