What Happens To Your Body In A Year?
In a single year, you'll lose about 4 kilograms (8.8 pounds) of skin cells and 27,000 hairs. But your body will also make a lot in one year: you'll produce 3.5 centimeters (1.4 inches) of fingernails, 15 centimeters (5.9 inches) of hair, 73 trillion red blood cells, 1,400 liters of sweat, 360 liters of saliva and 80 liters of tears.
from It's Okay To Be Smart
Key Facts In This Video
In a single year, you'll lose about 4 kilograms (8.8 pounds) of skin cells and 27,000 hairs. (1:28)
In a single year, Earth travels 940 million kilometers (584 million miles) around the sun. (2:33)
The word "year" comes from the Greek word "hora," meaning season. (3:02)