Do I need to ask for permission to give CPR or First Aid?

When you take a CPR or First Aid class, you typically are taught about the rules of consent.  This is a formal term which means "asking for permission." The basic premise is that people have a right to decide what happens to their bodies (the fancy term for this is "personal autonomy.") Therefore, it's considered unethical (and potentially illegal) to provide care to someone without permission.