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Start light: load, blisters, heat

Last reviewed: 2026-10-20 · Deutsch

Most rucking problems come from doing too much too soon. These rules come from military load-carriage research and from Rucksteady's own plan rules.

Load: add it in small steps and carry it well

RuleIn short
Add weight in small stepsGround forces rise in proportion to the load
One change at a timeLonger or heavier, never both in one week
Close and high on flat groundLowest energy cost when the load sits near your center of mass
Use the hip beltTakes pressure off your shoulders

Every kilogram adds stress to feet, shins and knees. Rucksteady's plans follow the one-change rule automatically. More in How to pack a ruck.

Feet: treat a hot spot the moment you feel it

Blisters are the most common march injury. Break boots in before long rucks, wear socks that fit, and treat a hot spot the moment you feel it — not at the finish.

Posture, steps and socks: Walking with weight.

Warning signs: stop and rest

Stop and rest when pain sits on one spot of a bone and grows from ruck to ruck, when an arm or hand goes numb (strap pressure on the nerves), or when your knee or back pain changes how you walk.

Heat: a pack traps it, so ruck early or late

A pack traps heat. In hot weather, ruck early or late, cut load or distance, and stop at the first sign of heat illness. Our Health & safety page lists the signs.

This article is general information, not medical advice.

Sources

  1. Knapik JJ, Reynolds KL, Harman E. Soldier load carriage. Mil Med 2004. (accessed 2026-10-20)
  2. Birrell SA, Hooper RH, Haslam RA. The effect of military load carriage on ground reaction forces. Gait Posture 2007. (accessed 2026-10-20)