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How exercise lung capacity? I am 13 years old

shuaiqi003212010-04-06 12:11:38 +0000 #1

0o child sky o02010-04-06 12:24:52 +0000 #2
do aerobic exercise. For example, 1. Swimming 2. Long-distance running. 3 skipping (fast dance) ....... so for you on the line

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