Put a weight in your backpack and go for a walk. It sounds deceptively simple, but this age-old activity, newly popularized by military-fitness programs, will torch fat, boost strength, and challenge even the most seasoned gym-goer. It’s called rucking.
Tactical athletes, like soldiers and po…
This article originally appeared on www.mensjournal.com: Rucking: The Cardio Workout That Builds Muscle Too
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