Chav kom tsis muaj menyuam yog kom tso cov khoom hauv lub txee kom tsis muaj menyuam. Lub siab-chav dej nrawm tshaj tawm cov hnub qub sov, uas ua rau cov protein ntau ntxiv rau kev ua tiav lub hom phiaj ntawm kev tsis muaj menyuam. Cov yam ntxwv ntawm cov ntshiab kom tsis muaj ncua yog cov muaj zog nkag. Proteins thiab protoplasmic colloids yog denatured thiab coagulated nyob rau hauv kub thiab vaum mob. Lub kaw lus enzyme yog yooj yim rhuav. CHAV nkag lub hlwb thiab condenses rau hauv dej, uas tuaj yeem tso cov cua sov muaj peev xwm nce qhov kub thiab txhim kho lub zog kom tsis muaj menyuam.
Chav cov khoom siv hluav taws xob tshwj xeeb: kub thiab lub sijhawm luv luv tsis muaj menyuam. Siv dej ncig ua kom tsis muaj menyuam, cov dej nyob hauv lub thawv kom tsis muaj menyuam yog qhov ua kom tsis muaj menyuam yaus ua ntej, yog li ua kom tsis muaj menyuam lub sijhawm thiab kev txhim kho ua haujlwm ua haujlwm. Txuag hluav taws xob thiab nce ntau lawm. Kev ua haujlwm nruab nrab tau siv nyob rau hauv cov txheej txheem kom tsis muaj menyuam tuaj yeem siv hluav taws xob, txuag lub zog, sijhawm thiab kev siv cov nqi ntau lawm, thiab txo cov nqi ntxiv. Thaum lub sij hawm kom tsis muaj menyuam, ob lub tso tsheb hlau luam tau siv hloov raws li cov tso tsheb hlau luam me nyuam, uas nce cov zis nyob rau tib lub sijhawm. Rau cov khoom siv ntim khoom siv tau, tshwj xeeb tshaj yog ntim khoom, cov kev ua kom sov kub