HRM accurate?

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I recently purchased a Polar HRM and I am amazed at how HIGH it is estimating my calorie expenditure.
As a 5'1'' female with 18 BMI, I always thought my expenditure was MUCH lower than people of average height.
It says I burned 500 calories walking 6 miles and 800 calories playing three hours of tennis (doubles).
Is this really possible?

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  • jillybean9881
    jillybean9881 Posts: 39 Member
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    As for the mileage, you can burn about 100 to 125 calories a mile so that seems right to me!