In order to properly perform it, you must first take the initial position: the legs should be fixed on special rollers, the lumbar region should remain pressed until the completion of its completion, the body - fit snugly against the working surface of the bench.
Ukuze wenze kahle, kufanele uqale ukuthatha isikhundla sokuqala: imilenze kufanele ifakwe kuma-rollers akhethekile, isifunda esifundeni kufanele sihlale sigxiliwe kuze kube sekuphelelweni kokuqedwa kwayo, umzimba ufanelwe ngokumelene nokusebenza komsebenzi ebhentshini.