Dawding because six is pale and organization is mild(slasticity decline), because consumption of glycogen occurs fast after four by Jeotsanchukjeok excess by excessive stress before slaughter for cause as the meat which water Chamchul is much waking on the flesh surfaces, pH drops by 5.3~5.5 within slaughter 1 hour and when such six cooks by beam water power decline, water damage is much make flesh products, Gyeolchakryeok is low and economical damage is big by serious waste reduction.The occurrence rate is 14~35% (weight decrement 3~5%) in case of pork, and close in upon to 50% monsoon.Reduce stress by long distance transport prohibition, reckless driving to prevent this lsangyuk and a rest and rest by mountain stream are required for 6~24 hours.(mountain stream 0 hours : 7.8%, ?4 hours : 1.9% occurrence)