Why do I startle easily?

Ok so I’m a jumper lol. It doesn’t take much at all to startle me and it’s annoying. I literally panicked and screeched when I felt my cats tail brush my leg out of no where which caused her to panic lol.

Why is my nervous system so alert? Is there a way to calm it so I don’t panic at the slightest stimuli?

Why do I startle easily?
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