Cov khoom no yog tsim rau noo noo-ntawv pov thawj thiab lub tshuab hluav taws xob thiab cov khoom siv hluav taws xob loj thiab tshuaj lom neeg nruab nrab. Plaub Txheej Txheej yog saws, uas muaj dej zoo thiab oxygen sib cais txum zog ua haujlwm. Txwv tsis pub dhau, koj tuaj yeem kho cov hnab ntim ntim ntawm cov kev sib txawv thiab cov qauv, thiab tuaj yeem ua rau lub hnab ntim khoom, cov hnab ntim khoom thiab lwm yam khoom noj.