One interesting fact about DNA is that if you were to unravel all the DNA molecules in just one of your cells and stretch them end-to-end, it would measure about 2 meters (6 feet) in length! Considering that the average human body contains trillions of cells, if you were to line up all the DNA molecules in your body, they would stretch over 120 billion kilometers (75 billion miles) which is enough to wrap around the Earth’s equator 3 million times!