Answer:
The answer is age.
Explanation:
So for a 50-year-old, maximum heart rate is 220 minus 50, or 170 beats per minute.At a 50 percent exertion level, your target would be 50 percent of that maximum, or 85 beats per minute.
Answer:
a American red cross
Explanation:
if was wrong I'm sorry just gor me I got right pls dont get mad
So the enzymes in your stomach are most likely there to help you disguest your food. Also they make sure everything is good in your stomach.