Blood pressure refers to the pressure created when blood is pumped by the heart into the circulatory system i.e. through arteries. When this pressure stays elevated for some time it's called as High blood pressure. The medical term for high blood pressure is hypertension.
The most reliable way to monitor blood pressure is directly within an artery, but as this method involves direct invasion it is not recommended for routine check ups.
The other way to monitor blood pressure is with the use of various instruments which include use of mercury or a pressure registering equipment, these products are readily available in the market and can easily used by individuals without a doctors assistance.
But it's known that prevention is better than cure and here are a few ways to control blood pressure: