Why do not wait any longer to hold back urine, feces it hung

Hunger through the mobilization of the body of sugar, fat, protein breakdown to maintain normal vital signs; and urine metabolic waste that needs to have a place to store the body only play the role of temporary storage, long time not waste excretion, urinary and anal sphincter bear squeeze urine, constant reports of nerve impulses, the brain get the signal will be very hard for me to want to go to the toilet

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