The speed is not stable/constant , it`s changing
Answer:
The reason is because the heart requires more oxygen when exercising. Several physiological events happen to increase the blood flow and therefore oxygen flow to that muscles,including the heart.
Also the volume of blood that the heart pumps out is maintained so that the body organs receive the necessary amount of oxygen and nutrition, because if it didn't adjust the flow of blood to match activity level, you will be insufficient. Either output method will be lower than needed.
Answer:
take it easy
Explanation:
tennis is a pretty hard sport to learn. For you to pass the tryouts for freshman year, you would need at least 1-2 years of practice. its impssible to learn this sport in 2 months.
