Boys:
-Deepening in Voice
-Growth Spurts
-Pubic Hair Development
-Increased Production of Testosterone and Sperm Cells
Girls:
-Growth Spurts
-Pubic Hair Development
-Menstrual Cycle Begins
-Increased Production of Estrogen and Eggs
Cardiovascular fitness exercises strengthen the heart and lungs.
Cardiovascular exercises basically consist of activities that will get your heart rate up. Doing so, it will strengthen your heart along with your lungs due to the increase of your heart rate.
Answer:
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