The answer is: decreased circulation
Increased flexibility tend to be achieved by implementing stretching exercise. When we stretch, we would improve our blood circulation because the movement help the blood to flow in different type of direction. In the long run, exercises to increase flexibility would have positive benefit for our cardiovascular system.
There are many steps in designing and conducting a scientific experiment, but the main ones are a hypothesis, trials, step/procedures, and a conclusion/review
They might still be under the influence of medication given to them during the surgery. no one under the influence should drive. it is a safety hazard for them to drive