According to the said principle, of the demands placed upon a muscle cause is to become stressed, then there exists a chance that the muscle will weaken. true or false

Answer in a couple of paragraphs, 1 or 2 at the most if anything! 20 points + brainliest--> explain what all the systems in your body do to work together < --list of systems needed: circulatory systemrespiratory systemdigestive systemexcretory systemnervous system