Chozizira chozizira m'madzi ndi chipangizo chogwiritsa ntchito bwino kwambiri, chopulumutsa mphamvu, komanso choziziritsira chomwe chimaziziritsa bwino. Amagwiritsidwa ntchito kwambiri popanga mafakitale kuti apereke kuziziritsa kwa zida zamakina. Komabe, tiyenera kuganizira zovulaza zomwe chiller ingayambitse ngati kutentha kwapakati kuli kokwera kwambiri mukamagwiritsa ntchito?