Dumbbells, nkibikoresho bizwi cyane byimyitozo ngororamubiri, bigira uruhare runini mu gushiraho, guta ibiro, no kongera imitsi.Ntabwo bibujijwe n'ahantu, byoroshye gukoresha, utitaye ku mbaga nyamwinshi, irashobora gutobora imitsi yose yo mumubiri, kandi ikaba ihitamo ryambere kuri benshi b ...
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