When your body encounters stress, the common reflex
is for muscles to tighten up and feel tense. Once the stressful situation is overcome, the muscles then relax and go back to its original state. Musculoskeletal System. When your body encounters stress, the common reflex
is for muscles to tighten up and feel tense. Once the stressful situation is
overcome, the muscles then relax and go back to its original state.