...ruck weight to body weight ratio. Having roomed with a short cross-country runner during Beast and had a gymnast (also short) in my squad as a CBT1 SL, I have some appreciation for rucking being more of a challenge for smaller folks, no matter how athletic, than it is for someone with my build. Neither of them ever took a break on a ruck march, they just kept marching through...
Thanks! Honestly, rucking is one of my weaker points (for that reason), so I'm going to have to work on it a lot more if I want to do well at Ranger School and wherever I branch.
Hmmm. Keep an eye out for shorter, Ranger-qualified instructors and pick their brains, perhaps?