Answer:
Target heart rate is generally expressed as a percentage (usually between 50 percent and 85 percent) of your maximum safe heart rate. The maximum rate is based on your age, as subtracted from 220. So for a 50-year-old, maximum heart rate is 220 minus 50, or 170 beats per minute.
Explanation:
Future differences I think
Explanation:
is that the full question you have written in there cause i think some are missing
Hi !
because it maintains your internal physiological balance : respiration, blood pressure,.....whatever the environment changes
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