Hi, due to anxiety problem, can your muscle be very tensed? my chest muscle and arm also my back muscle is very tensed..

Yes: Muscle tension is one of the most common symptoms of anxiety. Some things that can help this in the short-term are regular exercise, healthy diet, a daily meditation practice, progressive muscle relaxation, breathing slowly and softly (extend the out-breaths). Here's an article I wrote about the general approach to reducing anxiety: http://davidgodot.com/relaxation-stress-management/