Why does airway collapse occur during sleep?

Provide brief insight into sleep breathing and airway collapse.

When you sleep, your breathing patterns are different than when you are awake, and the size of the airway gets smaller. Also, the muscles that support the tongue relax during sleep — if you are lying flat, it is more likely that your airway will close up. Several factors may contribute to the airway collapse, like age, weight gain, neck size, and your body type.