In what range should your pulse rate be when you are jogging? what is the target range for a person 15 years old?
2) why should you see a doctor before starting an exercise program? interview a health professional and design your own exercise plan.

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