焦虑和失眠形成了一个恶性循环，很难打破。

Anxiety and insomnia create a ___vicious circle that's difficult to break.

压力导致暴饮暴食，暴饮暴食又引发健康问题，这形成了一个恶性循环。

Stress leads to binge eating, and binge eating causes health problems, forming a ___vicious circle.