Why Is It So Difficult To Chug A Gallon of Milk?


Can you imagine chugging all this milk? Sakkawokkie/Getty Images/iStockphoto
Can you imagine chugging all this milk? Sakkawokkie/Getty Images/iStockphoto

It's one of the strangest - and potentially grossest - challenges out there. But what happens when you drink milk? Why does it make you throw up?