I had a nightmare and i know that i'm dreaming. then my whole body went numb. i didn't breath for the whole minute. why's that happen to me?

Trauma?: It is possible that you are having a reaction to a traumatic experience like abuse, being a victim of a crime, a natural disaster, war experience or other traumatic experiences. Your experience reminds me of symptoms of what we call "post-traumatic stress disorder" which involves having symptoms of 1) avoiding reminders of the trauma; 2) numbing or not having any feelings; 3) re-experiencing.