Answer: A. Blood flow increases.
Explanation: When you're doing a proper warm up, it starts up your cardiovascular system by raising your body temperature and increasing blood flow to your muscles and throughout your body.
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It increases the blood sugar. You have to make sure your blood sugar is not too low or not too high. If it becomes to high/low your health can become really bad. Yes, diabetes is harmful to your body because it can cause a heart disease, stroke, kidney damage, and nerve damage.
To keep the egg from drying and allows reproduction
