Our expert says:
Yes, provided you allow that increased fitness to "speak" by training a little harder. In otherwords, with 30 minutes of training at your disposal, you can jog or run as opposed to walk, and then you will certainly burn more calories. So it's true, but only when you tap into your fitness to actually train a little harder.
The other place this works is that if you are fit as a result of doing a great deal of exercise, you have more muscle mass than someone who has not trained. That's why you do weight training - to raise the metabolic rate. This means that at rest, you burn more energy than someone who is not fit.
Either way, your final statement is 100% correct - you must aim for fitness, because it takes care of the rest. If you are getting fitter, then you are getting healthier, and it's a more measurable and sustainable goal that you can pursue. So it's important to adjust your focus that way and prioritize fitness.
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