Which of the following first aid methods is most effective in restoring a regular heartbreak in an individual whose heart has entered a quivering state? A. The use of chest compressions

B. The use of an automated external defibrillator

C. The use of mouth to mouth breathing

D. The administration of CPR

Prevention of second hand smoke

Well if you pick a machine to work on and that's gonna be your exercise if you don't stick to that machine your muscle strength your muscle mass rather will change because you haven't been doing it you change something in your exercise routine which changes your body's form of dealing with things for example you might become weaker or stronger depending on what kind of exercises you do in whether or not the machine you picked actually your muscles grow.

Blood transfusions were rarely done and often fatal; they were outlawed until the nineteenth century.