Dumbbell ni ubwoko bwibikoresho byimyitozo ngororamubiri.Ikoreshwa cyane cyane mumahugurwa yimbaraga zimitsi hamwe namahugurwa yimitsi yimitsi.Imyitozo ngororangingo isanzwe irashobora gukoresha neza imitsi yigituza, inda, ibitugu, amaguru nibindi bice.Ifite ingaruka nkizindi ...
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