Dumbbell ndi mtundu wa zida zolimbitsa thupi zophunzitsira minofu.Amagwiritsidwa ntchito kwambiri pophunzitsa mphamvu za minofu ndi maphunziro a kayendedwe ka minofu.Kuchita masewera olimbitsa thupi pafupipafupi kumatha kulimbitsa minofu ya pachifuwa, pamimba, mapewa, miyendo ndi mbali zina.Zili ndi zotsatira zofanana ndi zina ...
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