it can be used to help repair broken DNA, even when the break involves both strands of the double helix.
Answer:
Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.
Arm, back, legs, stomach, and in reality you would need to use them all at least once
