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for cardio training, what should my heartrate be at on treadmill?
im 25, after running only 1 mile at a 10 min/mile pace, my heartrate is at 200. is that too high?? after that 10 min. im out of gas and can only force myself to keep going for another 2min. or so until i have to rest/walk. what should my heartrate be set at?? my goal is to do 3 miles, in less than 30 min. i lift weights, but cardio never was my thing
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