3. Txhawm rau loosen txoj hlua, tsuas yog rub cov noog uas thaiv, lub qag tuaj yeem tig tau yooj yim, thiab txoj hlua yog xoob. Tag nrho cov txheej txheem yog ib qho yooj yim rau kev khiav lag luam, kev txuag hluav taws xob thiab kev nyab xeeb siv.