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4 answers

the adrenal gland would produce adrenaline and that will produce a rise on the heart rate

2006-12-14 10:14:34 · answer #1 · answered by photojenny 2 · 0 0

The rate goes up until glycogen reserves are depleted or you reach a state of exaustion. Then it levels or drops off.

2006-12-14 18:17:21 · answer #2 · answered by doggiebike 5 · 0 0

It will raise your heart rate.

2006-12-14 18:17:03 · answer #3 · answered by smile4u 5 · 0 0

Oh, come on, you MUST know this one. Have you never run?

2006-12-14 18:12:18 · answer #4 · answered by Anonymous · 0 0

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