Diet

The average person can survive three days without water and can service 8 to 21 days or up to two months if the person is deprived of food but can only survive a week without both food and water.

Signs of dehydration include feeling thirsty, having dark yellow, strong-smelling urine, peeing less often than usual, feeling dizzy or lightheaded, feeling tired, having a dry mouth, lips, and tongue, and having sunken eyes.