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  • The difference has to do with the energy source your body is utilizing during the exercise. When you work at 65% of your max heart rate your body uses its aerobic metabolic pathway and uses oxygen to burn fat as your energy source. When you bump up your heart rate it becomes more difficult for your body to pump oxygen to…
    in target heart rate & calorie burn...need explanation pls? Comment by flipyourcoin April 2011
  • Currently 145 Goal 130-135 I think it is important to be toned and strong, so if I look good and still weigh more than my goal weight, I will still be satisfied. Keep in mind that muscle weighs more than fat. If you're not sure if your weight is due to muscle or fat, a good idea would be to keep track of body circumference…
    in Any Women Who are 5'6?? Comment by flipyourcoin April 2011
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