This is why you still feel exhausted after eight hours of sleep

From stress levels to diet, there are lots of factors at play, says Lauren Taylor

Wrecked after a long night's sleep? We might have some answers.

Do you regularly get a full night’s sleep, but still wake up feeling groggy and tired? We all know eight hours is doctor-recommended, but it’s about quality as well as quantity – and not many of us are getting it right.

New research by UK company Thriva – who asked 46,000 people in the country about their sleeping habits – found a massive 71% did not feel refreshed after waking on four or more days per week, despite 84% of those surveyed getting 6-8 or more hours of sleep a night.