2 Points Why can exercising outdoors be a particularly dangerous time for your lungs?
A. During exercise, you take in up to two to three times the amount
of air that you normally breathe, which also means you inhale
more pollutants.
B. During exercise, you take in up to two to three times the amount of
air that you normally breathe, which overloads your muscles with
oxygen, causing cramps.
O C. During exercise, you take in up to two to three times the normal
amount of air that you would breathe during that time period,
which can give you a migraine headache.
O D. During exercise, you take in up to two to three times the amount of
air that you normally breathe, which can make you light-headed,
increasing your risk of falling and hurting yourself.

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