<span>treat the patient to the best of his or her ability and provide care that a reasonable, prudent person with similar training would provide under similar circumstances.</span>
Answer:
Internal can be you don't want bad things happening to your body, you don't want drugs affecting your health,etc.External could be you don't want it to affect your family or people around you.For example, like a cigarette if you are smoking in public you can be affecting others passing by or hanging out with you(external)but if it's just you by yourself smoking it is damaging your lungs(internal)
The heart is strengthend through cardiovascular exercise.
