If you’re getting to bed on time and staying there for the recommended seven to eight hours, but still are routinely fatigued, you may have a sleep disorder. If you answer yes to any of the following, talk to your doctor:
Do you unintentionally fall asleep during the day?
Does it take longer than 30 minutes for you to fall asleep?
To fall asleep at night, do you need pharmaceuticals, alcohol, or other drugs?
In bed, do you have the uncontrollable urge to move your legs?
Do you snore?
Do you wake up easily during the night?
If you wake in the night, do you have trouble going back to sleep?
Do you have pain that interferes with sleep?
Do you have frequent nightmares?
This article originally appeared in the March 2014 issue of Popular Science.