When a recent study looked at health differences between late and early risers, it appeared to make grim reading for night owls. Increased risk of early death, psychological disorders, and respiratory illness were the stark findings from the paper, which backed up other research suggesting late-nighters are more likely to suffer ill health. But is being a night owl really bad for you and does it mean some of us should ditch the late nights and lie-ins to become more like morning larks?