Anyway, I need to catch some zzz'.

无论如何，我需要赶上一些 zzz'。

You'll often hear people say: " Man, I got to catch some zzz' before my airplane. I need to get some sleep." Why we pick " z" , I don't know.

你会经常听到人们说：“伙计，我得在飞机起飞前赶上一些 zzz。我需要睡一觉。”为什么我们选择“z”，我不知道。