And Then You're Dead

sound is actually pressure waves moving through the air, which is why it can cause damage

Once the oxygen drops to 10 percent you would go unconscious without warning and quickly fall into a coma.* Sudden death happens at 6 to 8 percent oxygen

Your lungs take in a half liter per breath, but you use up only 20 percent of the oxygen per breath

Air is 21 percent oxygen

injuries to arteries are more dangerous than those to veins because arteries carry blood from your heart and are under pressure, so when they’re severed they squirt—as opposed to veins, which just drool