I know that it's normal to shake or shiver when having a panic attack or just experiencing bad anxiety, but sometimes I get it when I don't even feel THAT anxious. For example, right now I am a bit anxious as my partner is out with his friends and I usually get a bit scared that he's gonna die. The whole night I keep getting mild "internal" shivering/shaking, the kind you get when you're just a bit cold. Like my teeth aren't chattering and my arms aren't really shaking, but it feels like inside my abdomen is like shivering. It's not happening CONSTANTLY, but it keeps happening. I always think it's because I'm cold so I'll put on some blankets and layers, but I'll still get it. This also happens to me when I'm in any form kind of confrontation. Anyone else?