But not everyone’s circadian rhythm is the same. Night owls, for instance, generally feel tired later than early birds. Often because they produce high amounts of the sleep hormone, melatonin ...

When you need sleep depends on what’s called your chronotype—your body’s natural inclination towards certain times of day.

The circadian rhythm—our body’s natural 24-hour clock—regulates when we feel sleepy and when we feel alert. It governs the ...

The singer and former First Lady were both reported to be early risers, but one neurologist claims getting out of bed early ...

There is evidence that biological rhythms are dictated by genes ... males have the highest risk for delayed sleep phase, or night-owl tendency, she said. But it's hard to know how much of that ...

Today’s energy kickstarter: how to tell if you’re a regular robin – not an early bird or night owl ... is to pay close attention to your circadian rhythm. “Morning and evening types ...

However, if you’re a night owl by nature ... have something called delayed sleep phase syndrome. “One of the circadian rhythm disorders that’s very common is delayed sleep phase disorder ...

There are night owls and morning larks, writes columnist Colleen Steele, referring to people's sleep habits. So which bird are you?

Regularly staying up past midnight disrupts sleep cycles, leading to weight gain, poor mood, stress, and reduced focus.