english: It's estimated that, on average, prisoners spent six  or so hours a day on treadmills, the equivalent of climbing 5,000 to 14,000 feet.
non_english: Ocenjujemo, da so zaporniki preživeli v povprečju 6 ur na dan na tekoči stezi, kar ustreza vzponu od 1.524 m do 4.267 m.