Mafuta a oxygen amafunikira machubu oyesera ndi zida zofunikira pakuwunika kwamadzi, kugwiritsidwa ntchito kwambiri m'matumbo, mafakitale, komanso kuyesedwa kwachilengedwe. Machubu apaderawa adapangidwa kuti azitha kupirira kutentha kwambiri komanso mikhalidwe yovuta ya mankhwala mkati mwa chimbudzi cha mankhwala. Tiyeni tidzilowe m'magulu ofunikira komanso machitidwe abwino ogwiritsa ntchito machubu a cod.