<span>Gradually increasing the demands on your body as you advance in your fitness program is known as progression. You progress to other levels of training, so as to make your body stronger. Specificity is the quality of being specific. Regularity refers to something that happens regularly. Overload is too much burden, and it is not good.</span>
Answer:
After leaving the heart, the red blood cell travels through the pulmonary artery to the lungs. There it picks up oxygen making the deoxygenated red blood cell now an oxygenated blood cell. The blood cell then makes it way back to the heart via the pulmonary vein into the left atrium.
Explanation:
second question answer yan
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