Drowning is a type of suffocation death. After the lungs take in water, death happens. This increased water intake then obstructs breathing. The lungs grow heavy, and oxygen delivery to the heart ceases. The body's core temperature begins to rise, causing pain and panic. People can drown in as little as 1 inch of water for hours. They usually don't feel any pain until their bodies start to heat up. Then they begin to sweat and have trouble breathing. Eventually, they need more and more water to breathe. This is because there isn't enough oxygen in the water to burn all the carbon dioxide they are producing. People most likely to drown: • Children under five years old who aren't vaccinated against measles, mumps, and rubella (MMR) vaccine because of their immune systems' inability to fight these diseases • Adults over 65 years old who lack mental clarity or mobility problems that would prevent them from getting into a swimming pool or other body of water • People with heart conditions or asthma because they may not be aware they are having an attack • Alcoholics or drug addicts who may not realize how drunk or high they are