How do you avoid hugs from people you don't want to be hug?

Why some people just can't seem to get a hit. I has happened to me. I like my space bubble and when I ste h my arm out infront of them just a little smile letting them know I don't like hugs. Out of no where the jump straight to hug me. I hate it. What do you do when you don't want to be hug? Some people just can not respect bounderies I try avoiding eye contact yet out of nowhere hug I'm like what yhe hell just happened I was caught of guard.

How do you avoid hugs from people you don't want to be hug?
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