How might your legs move if your knees were ball-and-socket joints? My knees would move forward and backward
My legs would swing in all directions
My legs would bend and flex.
My knees would pivot but not bend.

What ethic groups are most affected by obesity and why?

If something is painful during exercise, what should you do? a. back off the exercise. b. modify the exercise. c. consult a physician if the pain persists. d. all 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