The familiar labels "night owl" and "early bird," long used in sleep research, don't fully capture the diversity of human internal clocks, a new study has found. The McGill University-led study ...

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Being a night owl has its advantages – like having the energy to do more activities after school or work, or staying awake for late-night TV. But going to bed later on a regular basis may not be so ...

View post: Heavy Snow Warning Announced as 5 Feet Approaches: 'Delay All Travel' Night owls have a 16% higher risk of heart attack and stroke, study finds. Much of increased risk linked to smoking, ...

Bad news, night owls: Staying up late can be bad for your heart. But there's good news, too.

Add Yahoo as a preferred source to see more of our stories on Google. While it is difficult to fundamentally change your chronotype, it does naturally shift as you age.Composite: Rita Liu/The Guardian ...

A good night’s sleep is critical for our physical and mental health. And while getting the right amount of shut eye is important, the time of day you prefer to sleep also plays a role. Some prefer to ...

People typically tend to be either early birds or night owls depending on when they prefer to be awake. Some people feel the most productive early in the morning, and others feel more productive late ...