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This depends on the intensity and type of exercise as well as the level of difficulty. For example 10 minutes on a treadmill might use 250 calories for one person while another would only burn 140 because they where incapable of using a more difficult setting. Also 10 minutes on a cross trainer may burn 200 Calories as it uses different muscles.

It is therefore impossible to give a answer to the above question as the number of calories burnt depends on more than just length of exercise.

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11y ago
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11y ago

No way of telling, it depends heavily on how hard you you ride.

Me, I'd use maybe 600 calories in 45 minutes, but I ride hard and is quite a bit heavier.

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Q: How many calories did you burn if you are 100 pounds and you were riding your bike for 45 mintues?
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