Lub zog ntawm cov iav kom huv si ntim tsuas yog suav nrog cov hauv qab no:
Tiv thaiv cov khoom zoo thiab ruaj khov: iav fwj muaj cov khoom xyaw zoo heev rau cov khoom xyaw hauv cov tshuaj pleev ib ce hauv cov tshuaj pleev ib ce ntawm lub teeb thiab oxygen. Tshwj xeeb tshaj yog rau cov khoom lag luam uas tau yooj yim oxidized thiab yooj yim li vitamins, iav fwj loj tuaj yeem ua kom zoo rau lawv cov txee lub neej thiab siv cov teebmeem.
Txhim kho cov loog ua kom zoo nkauj ntawm cov khoom: khob fwj muaj siab transparency thiab kev ntxhib los mos. Los ntawm cov txheej txheem tshwj xeeb, lawv tuaj yeem ua tiav ntau yam tsim thiab ua kom zoo nkauj, ua cov khoom lag luam zoo dua siab dua thiab ua kom zoo. Tsis tas li ntawd, cov fwj iav kuj tuaj yeem ntxiv cov xim sib txawv thiab cov qauv los nce qhov kev lees paub thiab kev nyiam ntawm cov khoom lag luam.
Kev tiv thaiv ib puag ncig thiab kev ceev: iav fwj yog cov khoom siv rov ua tau dua tshiab uas tuaj yeem txo cov khoom qias neeg ntawm cov tshuaj pleev ib puag ncig ntim khoom rau ib puag ncig tom ib puag ncig nws tau muab pov tseg. Piv nrog rau lwm cov ntaub ntawv xws li cov hwj yas thiab txhuas fwj, iav fwj yog tsis yooj yim dua rau kev rov ua haujlwm thiab muaj txiaj ntsig rau kev tiv thaiv ib puag ncig.
Kev Nyab Xeeb thiab Kev Lom Zem: Cov iav fwj yog cov tsis muaj tshuaj lom thiab tsis muaj mob, muaj cov khoom siv tshuaj tiv thaiv zoo, thiab ua kom lub cev huv thiab kev nyab xeeb ntawm cov khoom lag luam. Tsis tas li ntawd, cov fwj iav yog tus thiab huv si, thiab yuav tsis cuam tshuam los ntawm cov tshuaj lom neeg, uas yuav ua rau cov khoom puas.
Lwm cov Nta: Cov raj hluav taws xob tseem muaj cov txiaj ntsig zoo heev-pov thawj thiab cov khoom lag luam kom ntseeg tau tias cov khoom muaj kev nyab xeeb; Nyob rau tib lub sijhawm, lawv lub siab thiab kub siab kuj tseem ua rau lawv ruaj khov nyob hauv ib puag ncig kub.