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2006-10-12 11:13:31 · 2 answers · asked by kreepy 1 in Health Other - Health

2 answers

When you work harder you tend to breathe deeper. This trains the lungs to inflate better.

2006-10-12 11:15:58 · answer #1 · answered by Gone fishin' 7 · 0 0

speeds heart rate, pumps more blood thru the lungs gets more oxygen to where it needs to go. The more blood passing quickly thru the lungs the better they work to exchange oxygen.

2006-10-12 11:16:09 · answer #2 · answered by essentiallysolo 7 · 0 0

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