This is Demand 4 in The 5 Physical Demands of Hiking series:
The 5 Physical Demands of Hiking That Most Workout Plans Ignore
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There is a specific kind of gym confidence that evaporates the moment you step onto a real trail with a real pack and a real timeline. It usually happens somewhere between the first long climb and the first real descent.
If you have been following along, you already know the point of this whole project: most people train their engine and ignore the parts that actually take the damage.
Pack weight is one of those parts.
Here’s the core argument: load tolerance is not cardio. A pack changes posture, breathing mec…