8. Using equipment that you haven't been trained on A. OK as long as you're careful and read the directions, B. can cause major
damage to your body and to the equipment . C. allows you the opportunity to teach yourself how to do a particular exercise. D. is a good way to add variety to your workout .
Your pulse can show you so much things! You can try to detect murmurs, or irregular heart beats, or you can see if your heart rate is in a healthy zone.
