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Could always feeling tired be a sign that something else is going on?

Dr. Andrew Ordon explains that if you have trouble participating in normal daytime activities without feeling an irresistible urge to sleep, it is possible that narcolepsy -- which is a chronic neurological disorder -- is at the root of the problem.

He explains another symptom is the weakening of muscles, which can occur when you feel strong emotions like embarrassment or laughter and says your head may drop, your face may droop, or your knees may suddenly give way.

Dr. Ordon says other symptoms, like sleep disruption or sleep paralysis, can cause you to wake up frequently throughout the night or create the inability to move or speak for a short time when you’re falling asleep or waking up.

Another symptom is having vivid dreamlike experiences, which Dr. Ordon explains can seem real.

If you experience any of these symptoms, talk to your doctor or healthcare provider.