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» 45-Minute 10K
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Day 045 - Which muscles?

0-2 mile run        Training via ActiveMail

FOR TODAY'S WORKOUT, RUN UP TO 2 MILES: Running strengthens and tightens three muscle groups: (1) the calf and Achilles (the back of the lower leg below the knee); (2) the hamstring (the back of the upper leg between the knee and the butt); and (3) the lower back (the butt and lower back area).