Yes. I find that kind of thing particularly noticeable in cats. When
they suddenly observe a predator ahead (or even prey such as birds) they
freeze; go into slow motion; and then either explode into an energy of
running away, or gradually slip slowly into slink mode, making
themselves as small as possible, belly to the ground, and ready to leap
forward. Cats have a superb body-control system that is a delight to
observe.
Humans have similar autonomic behaviour; especially when danger suddenly
arises. The chemical changes in the central nervous system have evolved;
no doubt because they saved many lives in past ancestors.
But individual humans have different ways of coping with similar social
situations; and these are no doubt conditioned in their individual
pasts. I tend to be like Cicero, no doubt because of a higher degree of
education than most and because using language and reason have succeeded
for me in my past.
I grant that we all have (well, perhaps with a few exceptions of genetic
failing) the autonomic reactions, but when we recover from those we fall
into different handling techniques.
Ed