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The 2-Minute Rule for polarized heart

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Most runners run way too difficult. We log nearly all of our miles at moderate- and superior-intensity speeds, scarcely deigning to strike the small-intensity paces which are so necessary to creating an aerobic base. Targeting just one to two difficult periods on days if you know you’ll be adequately rested https://thejillist.com/story8046437/5-tips-about-polarized-heart-you-can-use-today

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