Cardio Question

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    Cardio Question


    Got a somewhat perplexing for me cardio question. I start out OK for the first 25 min or so, keeping my heartrate right where it should be. However, after this point my heartrate steadily starts to climb, and I have to lower the intensity of the cardio in order to keep it in the proper range. Any cardio veterans know if this is normal?

    Could well be a stupid question, but heck if I've never done much of it I just won't know now would I.

  2. xil
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    that's perfectly normal... it's just fatigue setting in

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