Influences

Fluid systems in the body are influential to how our body works, The circulatory system is no different it is because of this and other factors that could effect a persons blood pressure. The rate the heart pumps to the viscosity of the blood itself, blood pressure has many factors that can effect a persons body such as the food we eat and weather or not we exercise.

Lets look at another factor to do with the heart for a healthy person the beats are between 70-75  beats per minute, the higher the  heart rate the higher the blood pressure. Another factor of blood pressure is the volume of blood that goes around the body to the heart. The higher the rate of blood  to the body the higher  your blood pressure will be,there is a link between salt intake and blood volume in many people.the amount it raises blood pressure varies.

Resistance and viscosity are two of the major factors of blood pressure.

Resistance here relates to the size of blood vessels and the smoothness of these vessels,there are things in the body that effects the size of blood vessels,some make them thinner which increases blood pressure while some have the opposite effect. Fatty Acids  are responsible for the smoothness of the walls in our vessels, the more fatty acids on the walls of our vessels the less resistance we will have against high blood pressure.

Viscosity is the thickness of blood flowing through the body, the thicker the blood that runs through our body the higher the blood pressure,certain illnesses effect viscosity in the body as well as sugar levels.

There are also some factors that cause low blood pressure these are:

1. Sepsis
2. Hemorrhaging
3. Certain Toxins
4. Hormonal Abnormalities  

On a lighter note just sitting down and standing up will lower blood pressure, the factors of low blood pressure  will be a little more serve.