Falling asleep with our mouths open happens to all of us and many think it isn't such a big deal. However, there are some eye-opening things connected to open-mouth sleeping. Our facial muscles tense ...

Dear Eric: I play cards weekly with a group. One of the women sometimes chews gum during our games, noisily and with her mouth open. This is worse than fingernails on a chalkboard to me. Why do ...

Sleeping with your mouth open may seem harmless, but it can significantly impact your health. While occasional open-mouth breathing, like during a cold, is usually temporary, chronic mouth breathing ...

Dolphins are known for what appear to be big, contagious smiles. But do they actually, well, smile? The answer, according to a new study of dolphin play, is a resounding “maybe.” Dolphins use their ...