Those range from 6, 12, 24, and 48-hour military-style challenges, to distance-based group rucks. They work! For example, if you weigh 150 pounds, load your pack with about 15 pounds. Apabila job description telah tersusun dengan baik, maka job spesification atau spesifikasi jabatan akan mulai dikembangkan. who trains Special Forces soldiers for the US Military. "By advocating 3 sets of exercise of 10 repetitions per set, the likelihood that other combinations might be just as effective is fit man dan overlooked," they wrote in their 1951 book "Progressive Resistance Exercise.