The real reasons you’re still exhausted after 8 hours of sleep, according to an expert

Getting a full eight hours of sleep and still feeling drowsy? Sleep experts say it’s not just about how much shuteye you get.

Dr. Wendy Troxel, a licensed clinical psychologist and senior behavioral scientist at RAND based in Utah, emphasized the "really important distinction" between quantity and quality of sleep.

SLEEP PATTERNS COULD PREDICT RISK FOR DEMENTIA, CANCER AND STROKE, STUDY SUGGESTS

"Many people will say, ‘Man, I'm sleeping enough, I got seven to eight hours of sleep...