| A | B |
| interval training | alternate periods of exercise at a high intensity with periods of light exercise or rest |
| step aerobics | an aerobic workout using benches |
| warmup | beginning phase of workout |
| cool down | tapering off after exercise |
| target heart rate | desirable rate at which the heart should be beating for a training effect |
| spinning | high intensity workout simulating a bike race |
| pooling | accumalation of blood in the lower extremities |
| anemia | blood does not have enough red blood cells |
| aorta | largest artery in the body |
| arteries | carries oxygenated blood away from the heart |
| atherosclerosis | narrowing and hardening of walls of arteries |
| capillaries | carry oxygen and nutrients to the cells, and pick up waste products |
| diaphragm | muscle separating chest and abdominal cavity |
| hypertension | high blood pressure |
| plasma | the fluid part of the blood |
| platelet | helps clot the blood |
| pulmonary | right side of the heart |
| stroke | occurs when partof the blood supply is cut off to the brain |
| systemic | left side of the heart |
| veins | returns deoxygenated blood to the lungs |