Do you constantly hear from loved ones that you snore too loudly? Or do you often awake in the morning feeling unrested and grumpy? If you answered yes, or this sounds like a family member, sleep apnea may be a concern for you. Sleep apnea is a common yet very dangerous sleeping condition in which patients stop breathing during times of sleep. Typically, sleep apnea is caused by a restricted airway while sleeping. It can be caused by the placement of the tongue, the dental arch and position of the teeth, and even from being overweight.