<span>Blood vessels are dilated to increase the amount of oxygen carried in the blood, and the lungs work harder to meet the body's oxygen demands.
Blood volume increases during exercise, making the body more efficient, so it is not necessary for the lungs to work as hard.
The lungs determine the speed at which the heart pumps, so blood flows at a level that accommodates oxygen absorption in the muscles.
The lungs expand and contract, which increases the rate of blood flow so the muscles can
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An acute strain is caused by trauma or an injury such as a blow to the body; it can also be caused by improperly lifting heavy objects or over-stressing the muscles.
Explanation:
Methamphetamine alters brain structures involved in decision-making and impairs the ability to suppress habitual behaviors .
