9 Reasons You Wake Up Tired After A Full Night Of Sleep

The repeated awakenings associated with sleep apnea make normal, restorative sleep impossible, making severe daytime drowsiness, fatigue and irritability likely. You might have difficulty concentrating and find yourself falling asleep at work, while watching TV or even when driving.People with sleep apnea may sleep eight full hours, but because that sleep is constantly interrupted they don't reap the same restful benefits from it. Sleep apnea can also cause blood pressure to increase, adding to tiredness overall. And since men have larger larynxes, their airways close more often while lying down.