Nk’uko bamwe mu bakora imikino ngororamubiri babivuga, iyi ni yo mashini nziza yo kongera imitsi. Muri icyo gihe, iyi mashini izwiho umutekano wayo. Mu gihe cy’imyitozo, umukinnyi azabasha gukoza barbell ku burebure ubwo aribwo bwose akoresheje ukuboko gutya. Ni ayahe matsinda y’imitsi ashobora gukorwa no kongerwa kuri izi mashini zo gukoza? Ibikoresho byo gutoza imbaraga birakenewe kugira ngo horohereze imitsi no kongera uburemere bwayo. Bishobora kuba bifunganye, ku buremere busanzwe cyangwa munsi y’uburemere bwayo bwite.
Imashini zipima ibiro ku buntu ziba zikwiye kuba ziri mu gace k'umupaka iruhande rw'aho kubika ibikoresho byo gupima ibiro, ibiro na disiki. Kugira ngo abakiriya bashyireho uburemere bukenewe, ntibazakenera kujya kure kugira ngo bakore akazi.
Hafi y'aho bashyira ibiremereye ku buntu, hari n'imashini zikora siporo zifite uburemere bwazo. Abakinnyi bakunda gukoresha ibiremereye (disiki na dumbbells) iyo bakora hyper extensions cyangwa abs.