I'm scared of being out of breath. When I go to bed at night, I'm concerned because I think that can be happened any time and if I sleep, I can't do anything
I have this same problem, although for me, I was usually yelled at while I was at home. When someone raises their voice, I can't help but get tense.One fear I've developed pretty badly over the past few years is the fear of people getting mad at me, and it's gotten so bad to the point where I occasionally have nightmares about people getting mad at me for no reason at all (most of which taking place in school because school is a bad place).
My main actual fear is heights. I'm a big guy, a little top-heavy, and railings are always designed way too short so they only reach to my waist. It'd be very easy to fall over them.