Rucking: The Underrated Fitness Tool for Strength, Endurance, and Longevity What is Rucking? Rucking is the simple yet powerful act of walking with weight on your back, typically in a backpack or “ruck.” This practice originated from military training, where soldiers carried heavy packs over long distances to build strength and resilience. Today, it has become a popular fitness trend because it’s accessible, scalable, and incredibly effective. Whether you’re new to fitness or