Being HEALTHY, is being free from infections and disease.
Being FIT, is a measure of how well you can perform physical tasks.
Fitness measures Strength, Speed, Stamina and Flexibilty.
Blood leaves the heart, and is taken Away from the heart via Arteries.
Arteries split off into capillaries which take blood to every cell in the body.
Blood is carried back to the heart via veins.
The Blood pressure is at its highest when the heart contracts - the systolic pressure.
It is at its lowest when the heart relaxes - the diastolic pressure.
A normal person's blood pressure shouldn't be above 135 over 85. Blood pressure is measured in mmHg - mm of mercury.
Problems with blood pressure
ADOSE - things which contribute to high blood pressure.
ALCOHOL: Drinking too much alcohol
DIET: A diet with too much salt in it.
OVERWEIGHT: Being overweight.
STRESS: Being under a lot of stress for a long period of time.
EXERCISE: Not doing enough physical activity.
If your blood pressure is too low, you will have poor circulation, so tissues won't get all the oxygen and food necesssary - if your brain doesn't get enough oxygen and food you can get dizzy and faint.
If your blood pressure is too high, blood vessels can burst, this can lead to strokes, brain damage and kidney damage.