If you "feel the burn" while exercising, what is actually going on in your body? Ο Α.
The lungs have an excess of oxygen.
O B.
You have overextended and damaged the muscle.
OC.
Your heart has stopped beating for a split second.
OD.
Lactic acid is taking the place of oxygen in the muscle.
Reset
Next

b) the heart is a pump made of muscle and that is difficult to grow in the lab.

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.