Assuming your ‘is’ in your question is ‘if’, you’re answer is True.
Answer:
The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.
Explanation:
Hope this helps!
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Hello,
Answer to question 1:
It is very useful to increase your flexibility because it helps your body to move better and stay active. Also you will get less pain from moving a lot if you body stays in shape.
Answer to question 2: Increased flexibility in sports is relay important. It helps the person to stay active and work his/her body. Ex. If your playing foot ball, you know all the plays in the book. Your really good and you work out. Now you stop playing for 5 years. Mostly if you trying foot ball again you will not play the same from 5 years ago.
So Flexibility is very important in everyone daily life to stay healthy and strong.
Hope this helps.