Whether you’re fairly new to running or you’re returning to the sport after a long time away, it takes time for it to feel easy again. In those first few runs back, your legs feel stiff, your muscles ...
Although the treadmill is only moving at 4.4 miles per hour, I feel like I cannot possibly go on. The grade just rose to 16.3, and my legs, though barely shuffling, are moving with great difficulty.
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