Because they are always hungry.

No.

Some people may grind their teeth unknowingly only during the night.

While others may grind their teeth during the daytime as well.

The medical term for teeth grinding is called bruxism.

What?

It also has a medical term.

Indeed.

Bruxism can be caused due to stress, anxiety, medications, etc.

However, according to a research, bruxism is also common in people who snore.

Snoring occurs when the muscles like uvula, tongue, etc. relax and fall at the back of our throat.

Blocking the air pathway and thus, causing difficulty in breathing.

Now, it is bruxism that reopens the air pathway.

Bruxism or grinding of teeth causes movement in the relaxed muscles.

Due to which the muscles return back to their original position, thus opening the air pathway.