Introduction Sleep is one of the most important pillars of good health. However, if you wake up feeling exhausted despite sleeping for several hours, your body may be warning you about a serious condition called sleep apnea. Many people dismiss loud snoring or daytime tiredness as normal, but these can be early signs of a potentially dangerous sleep disorder. According to respiratory specialists, untreated obstructive sleep apnea (OSA) can increase the risk of high blood pres