It ia good for you because it helps get you in shape and gets your body usedbto it. It is bad for you because it gets your body used to only doing those certian things so when you do more something bad may happen to you and it exhausts you.
Answer:
hopefully these two pictures helped
Explanation:
The second statement best explains the type of blood vessel and the function of these vessels' valves - <span>These are veins, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.
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Veins are large blood vessels which carry blood back to the heart. <span>Veins have a system of valves to prevent back-flow.</span>
You Should Go and help her out and check if shes ok and if she is having trouble, You should call 911 to fast help her up and you would probable save a life if you helped you would feel good about your self
