8. What are the recommended Yarget heart rate zones for different age groups during exercise? How does dehydration affect heart rate and overall cardiovascular health?

The target heart rate zones for different age groups during exercise are as follows:<br /><br />* Children (6-15 years): 70-80% of maximum heart rate<br />* Adolescents (16-19 years): 70-80% of maximum heart rate<br />* Adults (20-64 years): 50-85% of maximum heart rate<br />* Seniors (65+ years): 40-70% of maximum heart rate<br /><br />Dehydration can affect heart rate and overall cardiovascular health in several ways. When the body is dehydrated, the blood volume decreases, which can lead to an increase in heart rate in order to maintain adequate blood flow to the organs. This can put additional strain on the heart and may lead to an increased risk of cardiovascular events such as heart attack or stroke. Additionally, dehydration can cause electrolyte imbalances, which can also affect heart function and overall cardiovascular health. It is important to stay hydrated before, during, and after exercise to maintain optimal heart rate and overall cardiovascular health.