Some physical symptoms of fear are racing heart, the feeling where you can't breath, stomach ache. A face of a fearful person would look like would be pale, shocked looking, shaking, and maybe crying. Extreme fear can effect the mind by giving people bad dreams and seeing things (illusions). Fear effects what we see and hear by making the afraid being cautious and freaking out by small noises and seeing illusions. You don't master fear, some people get over their fear, but some people don't.