As with anything physical, start small and slowly increase! 10 or 20 lbs is enough to feel some pain, try it for an hour. Then 1.5 hours. Then increase the weight, and so on.
Humans have evolved to carry and run long distances and the world's militaries all ruck with 50 - 80 pounds regularly. So we're definitely "built" for this activity but of course you need to train for it.
Humans have evolved to carry and run long distances and the world's militaries all ruck with 50 - 80 pounds regularly. So we're definitely "built" for this activity but of course you need to train for it.
https://www.youtube.com/watch?v=qd-3z5_2M0Q