prone

我容易头痛。

I ___am ___prone ___to headaches.

瑜伽课上，老师让我们俯卧在地板上放松背部。

In yoga class, the instructor asked us to lie ___prone on the floor to relax our backs.

皮肤白皙的人在盛夏正午时段特别容易被晒伤。

People with fair skin are especially ___prone to sunburn during peak summer hours.