Kuwonjezeka kwamphamvu kwapakati komanso abs odziwika bwino ndi zolinga zodziwika bwino za anthu ambiri. Ndi wophunzitsa m'mimba, ogwiritsa ntchito amasangalala ndi njira yabwino, yokonzedwa bwino yokhala ndi mawu a biomechanics omangidwa mkati. Mapangidwe apadera a "pivot point point" amapangitsa kuti "crunch" ikhale yoyenera, pamene mapepala ozungulira amachepetsa kupsinjika kwa khosi ndi mapewa. Kukula kwa msonkhano: 1530 * 930 * 1040mm, kulemera kwakukulu: 100kg. Chubu chachitsulo: 50 * 100 * 3mm