What Is Sleep Apnea? Obstructive sleep apnea is the most common type of sleep-related breathing disorder. It occurs when the upper airway becomes blocked continuously during sleep.

The link between sleep apnea and high blood pressure Sleep apnea is a major contributor to hypertension, primarily due to repeated episodes of oxygen deprivation throughout the night.

They've found that people can tell the difference between the purrs, even if they aren't cat owners. Kitten-Mother Connection Kittens can purr when they're only a few days old.