1. Cardiovascular Fitness Facts

2. Vocabulary words
Artery – A blood vessel that carries blood from the heart to other parts of the body.
Cardiovascular system – The body system that includes the heart, blood vessels, and blood, and functions by moving oxygen and nutrients to body cells and removing cell waste.
Cholesterol – A fat like substance found in animal cells and some foods, such as meats, dairy products, and egg yolks

3. Fibrin – An elongated sticky cell in the blood that helps the blood clot; too much fibrin is implicated in the development of atherosclerosis.
Respiratory system – The body system including the lungs and air passages that functions by bringing oxygen into the bloodstream and eliminating carbon dioxide from blood.
Vein – A blood vessel that carries blood filled with waste products form the body cells back to the heart.

4. Heart
Because your heart is a muscle, it benefits from exercise and activities such as jogging, swimming, or long distance hiking etc...
Your heart acts as a pump to supply blood to your body cells.
when you do vigorous physical activity, your muscle cells need more oxygen and they produce more waste.

5. A person who does regular physical activity might have a resting heart rate of 55 to 60 beats per minute
A person who does not exercise regularly might have a resting heart rate of 70 or more beats per minute

6. Blood
Although your body needs a certain amount of fat, excessive amounts trigger formation of fatty deposits along artery walls.
Cholesterol, a fatlike substance found in meats, dairy products, and egg yolks, can be dangerous because high levels can build in your body without you noticing.
*Teen age girls should not have less than 11 percent or more than 25% body fat. While teenage boys should not have under 6% or over 20% body fat

7. Benefits Heart - Heart muscle gets stronger.
- Pumps more Blood with each beat.
- Beats slower.
- Gets more rest.
- Works more efficiently

8. - Less bad cholesterol and other fats in the blood
Blood vessels
- Healthy elastic arteries allow more blood
flow.
- Less risk of atherosclerosis
- Lower blood pressure
- Less risk of blood clot leading to heart
attacks and strokes
- Development of extra blood vessels
- Healthy veins with healthy valves
Blood
- Less bad cholesterol and other fats in the blood
- More good cholesterol in the blood
- Fewer substances in the blood that cause clots.

9. Nerves of the heart
- Regular exercise helps the nerves slow
your heart down.
Lungs
- Lungs work more efficiently
- Deliver more oxygen
- healthy lungs allow deeper and less frequent
breathing
Muscle cells
- Use oxygen efficiently
- Get rid of more wastes
- Use blood sugars and insulin More effectively to
produce energy