Recent research suggests that there is a link between and low-back pain. a treadmill usage b smoking c alcohol consumption d pnf stretching

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