The ideal arm swing while running may be the one you’re already using, a new study of upper body biomechanics concludes.
via NYT > Fitness & Nutrition http://ift.tt/1sOG9DQ
via All Health and Fitness http://ift.tt/1mCpfAg
The ideal arm swing while running may be the one you’re already using, a new study of upper body biomechanics concludes.
via NYT > Fitness & Nutrition http://ift.tt/1sOG9DQ
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