It is common for individuals to protect themselves against mental, emotional and physical pain by armoring ourselves, in a psychosomatic way in our physical and emotional bodies.
This tends to happen at a moment of a real or perceived crisis, when our bodies instinctively go tense in an effort to brace oneself from being overwhelmed by feelings. As therapist and teacher, I have worked with many individuals throughout the years that hold heavy layers of protection around themselves; sometimes decades after an experience of pain or trauma took place.