What it should be

According to Greek scientists at the annual congress of the American Society for the Study of hypertension (San Francisco, California) tea flavonoids reduce the adverse effect of caffeine on blood vessels.
The blood pressure in our body is always changing and it is part of the human physiology. It is very rare that someone's blood pressure is always the same. Because we are always active and we are always doing different things like eating, sitting, standing, walking, breathing, moving around and doing so many other things throughout a day.
It turned out that after taking tea systolic blood pressure (BP) increased stronger than after taking a caffeine: at 7.7. and 3.1 mm Art. Art. respectively (p <0.01)
Every time that we do something different, our blood pressure changes and it react to the different positions that we are in.
For the mean arterial pressure to allow an organ to operate the way that it should, it must be at around 60 mmHg. This is enough for an organ of the average size person as long as it is remains at this spot. If the value falls below the average, it means that there is not enough blood pumping into the organ and this will cause the organ to become alchemic. The result will be tissue damage to the organ.
Light physical activity should take a prominent place in the arsenal to combat hypertension
The mean arterial pressure should be checked and calculated on a regular basis.

Properties of Arteries

Part two in Components of The Circulatory System explores the structure and function of the blood vessels called arteries.
Researchers studying a rare form of hypertension has identified the mechanism by which they believe a protein complex in the kidney operates as a master switch that regulates blood pressure, a finding that has broad implications for the treatment of more common forms of hypertension.
Our blood pressure is regulated from minute to minute by nerves.
Another example of this reflex occurs when you suddenly sit or stand up after lying down. Gravity pulls the blood downward, lowering the blood pressure in the carotid sinus in your neck. If the carotid sinus reflex didn’t act promptly, sending out nerve impulses (over sympathetic nerves) to increase heart output and constrict the arterioles, you would faint from the decreased flow of blood to your head.
Increased sympathetic nervous system activity can also result from the psychological stress caused by our reaction to unpleasant situations. In obese people, the stimulation of sympathetic nerves by elevated insulin levels may be a compensatory mechanism to limit weight gain.
(hotlookinfo.org.ua)