Obstructive sleep apnea (OSA) is the most common type of sleep apnea, and occurs when the muscles in your throat become blocked (“obstructed”) while you sleep. Another type of sleep apnea, central sleep apnea, happens when there’s a disconnect between your brain and muscles.

10 Causes of Dry Eye and What to Do About Them
There are lots of reasons your eyes may feel dry at any given time, including staring at the computer too long; a dry, windy day; and allergies. But if you