Rucking: How Much Weight to Start With, and What the Research Actually Shows
Start at 10% of body weight and cap most fitness rucking near 20%. Army lab data shows a 22%-body-weight pack lifts a walk from 71% to 83% of max heart rate — but the bone-density claims are weaker than the internet says. Load charts, a 6-week progression, and why your watch under-counts every ruck.
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