Rucking is an exercise which is simply walking with a backpack with weight. After you can do a full body workout with a rucking pack like the Outcorps Hammer 1.0.
It has a long and storied history within the military, especially in the U.S. The term "ruck" comes from "rucksack," a German word for backpack.
Rucking has been a foundational exercise in military training because it closely mirrors the real-world conditions soldiers might face in the field – moving quickly on foot while carrying equipment, supplies, and weapons.