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    Put marbles on the floor next to a cup. Using your toes, try to lift the marbles up from the floor and put them in the cup.

    ByHealthwise Staff
    Primary Medical ReviewerWilliam H. Blahd, Jr., MD, FACEP - Emergency Medicine
    Specialist Medical ReviewerGavin W.G. Chalmers, DPM - Podiatry and Podiatric Surgery

    Current as ofNovember 14, 2014

    WebMD Medical Reference from Healthwise

    Heart Rate Calculator

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    Heart Rate Calculator

    Ensure you're exercising hard enough to get a good workout, but not strain your heart.

    While you are exercising, you should count between...

    -
    Beats
    PER
    Seconds