Why do I get physical anxiety symptoms even when I’m calm mentally?

Name: Mitali Sen

Date of Birth: 29th March 1999

Time of Birth: 9:05 AM

Place of Birth: Kolkata, India

So, sometimes when I am at work or I am at some family gathering or something, I feel my hands trembling and I have this weird feeling in my stomach. Even though I am not actually stressed, I am having fun with my family or I am having fun at work with my colleagues and all, but this happens even though I am not stressed.

My mind is fine, my mind has nothing to worry about thoughts or anything else, but my body reacts as if I am panicking, something bad is going to happen, but I know nothing is going to happen. So, is there something in my chat, is there something, my zodiac sign may be, which tells that I have a sensitive energy, probably or if I show emotions very physically