Stop playing with your hair!

不要抚弄你的头发！

youdao

The behaviors ranged from the obvious (playing with your hair) to the subtle (not smiling).

他们提到的错误行为包括非常显眼的动作（玩头发），以及很微妙的表情（没有笑容）。

youdao

However try to avoid nervous mannerisms , such as tapping your foot or playing with your hair.

面试的时候，避免一些不自然的小动作哦，比如不停叩脚，拨弄头发之类。

youdao

The behaviors ranged from the obvious (playing with your hair) to the subtle (not smiling).

FORBES: Magazine Article