Why is it important to assess your fitness level? a. to establish a starting point b. to allow you to gauge improvements over time c. answers a & b d. none of the above

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