Eli5: How does water not get in your nose when you hold your breath while diving?

Question

Eli5: How does water not get in your nose when you hold your breath while diving?

In: 2

Answer 1

The nose is connected to the throat by a passageway called the nasal cavity. When you hold your breath while diving, the air pressure in your lungs is greater than the water pressure outside your body. This keeps the air in your lungs from escaping into your nasal cavity.