Do you think the person with the greatest vital capacity can hold their breath longer than those with a lower vital

capacity? consider the difference between internal respiration and external respiration and explain why lung capacity

may not have a great effect on the length of time you can hold your breath.

loses consciousness is your real and smarter answer.

when in a crucial situation, after calling 911, the correct posture for delivering effective compression is the proper hand placement.

first, place two fingers at the sternum, then put the heel of your other hand next to the fingers and place hand on top of the other. lock your elbows by using your body’s weight and compress the victim’s chest with a depth of 2 inches.

moreover, do 15 compression and 2 breaths, this process must be done four times until there is a pulse or a arrive.