Behavioral sleep medicine expert at the University of Alabama at Birmingham, Christina Pierpaoli Parker, Ph.D., shares how to distinguish between tiredness and sleepiness and management strategies.

If you regularly wake up from seven or eight hours of sleep still feeling tired, your instinct might be to start aiming for nine or even 10 hours a night — but that move might not solve the problem.

You went to bed at a normal time, you didn’t look at your phone before bed, you followed all the golden rules to get a good night’s sleepand you got the full eight hours undisturbed... yet after all ...