You’re sleepy all day
If you’re tired 24/7, don’t just chalk it up to a busy life. “A lot of people feel tired, but don’t know why and attribute it to lack of sleep, among other things,” says Boris Chernobilsky, MD, director of sleep and airway surgery at Mount Sinai Beth Israel in New York City. Daytime sleepiness is one of the most common sleep apnea symptoms, but men with sleep apnea tend to report daytime sleepiness more often than women, says Dr. Chernobilsky. Both obstructive sleep apnea (muscles relax during sleep, causing soft tissue in the back of the throat to collapse and block the airway) and central sleep apnea (the brain fails to signal your body to breathe) lead to disrupted sleep. Patients wake up frequently throughout the night but they don’t always remember it. They just feel sleepy all day. (Here are 12 other sleep disorders you probably didn’t know about until now.)
You wake up with a headache
If you start each day with a pounding head (and didn’t have one too many beers the night before), lack of sleep caused by sleep apnea might be to blame. Even if you did get the recommended seven to eight hours, sleep apnea disrupts your sleep. Shockingly, people with severe sleep apnea can awaken hundreds of times each night, according to the Stanford Center for Sleep Sciences and Medicine.