Answer :
Final answer:
Blood pressure increases during exercise to meet the body's oxygen demand for muscles and decreases after exercise; transitioning from standing to lying down may result in a decrease in blood pressure.
Explanation:
During exercise, blood pressure increases to ensure muscles receive adequate blood supply due to increased cardiac output, where the heart pumps more blood. This rise is necessary as skeletal muscles contract around blood vessels, requiring higher pressure to move blood through narrower vessels. After exercise, blood pressure lowers as vessels stop being constricted.
When transitioning from standing to lying down, blood pressure commonly decreases. In a lying down position, the heart doesn't need to work as hard against gravity, leading to a potential lowering of blood pressure.
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