AP BIOLOGY

Detailed explanation-1: -During exercise, your body may need three or four times your normal cardiac output, because your muscles need more oxygen when you exert yourself. During exercise, your heart typically beats faster so that more blood gets out to your body.

Detailed explanation-2: -“Your running heart rate should get into and stay in the 70–80% range. If your heart rate doesn’t reach this percentage of your maximum heart rate, you’re training more of your aerobic system, and if your heart rate goes above this range, you’re training more of the anaerobic system.”

Detailed explanation-3: -The rise in heart rate during exercise is considered to be due to the combination of parasympathetic withdrawal and sympathetic activation. The fall in heart rate immediately after exercise is considered to be a function of the reactivation of the parasympathetic nervous system.

Detailed explanation-4: -Generally, your target heart rate when jogging should be somewhere between 50 to 85 percent of your maximum heart rate. For example, if you are 30 years old and male, you would subtract 30 from 220 to find your maximum heart rate of 190. Your target heart rate zone should be 95 to 161 beats per minute.