Amapereka malo osungiramo ma dumbbells ophunzitsira kulemera kwaulele mu maphunziro a mtanda, 2-Tier malo a 10 awiriawiri a 20 dumbbells okhala ndi zolemera zofanana, ndi malo owonjezera pamwamba amalola kusungirako zipangizo zothandizira monga mipira yolimbitsa thupi, mipira ya mankhwala, ndi zina zotero. Chifukwa cha DHZ's mayendedwe amphamvu ndi kupanga, mawonekedwe a chimango cha zida ndi chokhazikika ndipo ali ndi chitsimikizo chazaka zisanu.
